diff --git a/module/environnement.js b/module/environnement.js
new file mode 100644
index 00000000..4d8499dd
--- /dev/null
+++ b/module/environnement.js
@@ -0,0 +1,222 @@
+import { SYSTEM_RDD } from "./constants.js";
+import { Grammar } from "./grammar.js";
+import { Misc } from "./misc.js";
+import { CompendiumTableHelpers, SystemCompendiums, CompendiumTable } from "./settings/system-compendiums.js";
+
+const RARETES = [
+  { name: 'Commune', frequence: 54, min: 27, max: 108 },
+  { name: 'Frequente', frequence: 18, min: 9, max: 36 },
+  { name: 'Rare', frequence: 6, min: 3, max: 12 },
+  { name: 'Rarissime', frequence: 2, min: 1, max: 4 }]
+
+const SETTINGS_LISTE_MILIEUX = "liste-milieux";
+const MILIEUX = [
+  "Collines",
+  "Déserts",
+  "Désolations",
+  "Forêts",
+  "Forêts Tropicales",
+  "Marais",
+  "Milieux Aquatiques",
+  "Milieux Maritimes",
+  "Montagnes",
+  "Plaines",
+  "Sous-Sols",
+]
+const ITEM_ENVIRONNEMENT_TYPES = [
+  'herbe', 'ingredient'
+]
+const COMPENDIUMS_ENVIRONNEMENT = [
+  { type: 'Item', subType: 'herbe', compendium: 'botanique' },
+  { type: 'Item', subType: 'ingredient', compendium: 'botanique' },
+  { type: 'Item', subType: 'ingredient', compendium: 'equipement' },
+]
+
+export class Environnement {
+
+  static init() {
+    game.settings.register(SYSTEM_RDD, SETTINGS_LISTE_MILIEUX, {
+      name: "Liste des milieux proposés",
+      hint: "Liste des noms de milieux proposés, séparés par des virgules",
+      scope: "world",
+      config: true,
+      default: MILIEUX.reduce(Misc.joining(',')),
+      type: String
+    });
+    game.system.rdd.environnement = new Environnement();
+  }
+
+  constructor() {
+    this.table = new CompendiumTable('faune-flore-mineraux', 'Item', ITEM_ENVIRONNEMENT_TYPES)
+  }
+
+  static getRarete(name = undefined) {
+    return RARETES.find(it => it.name == name) ?? RARETES[0];
+  }
+
+  static getFrequenceRarete(rarete, field = undefined) {
+    const selected = this.getRarete(rarete);
+    return selected[field];
+  }
+
+  async milieux() {
+    const milieux = new Set(this.getMilieuxSettings());
+    const elements = await this.getElements(it => 1, it => ITEM_ENVIRONNEMENT_TYPES.includes(it.type));
+    elements.forEach(it => it.system.environnement.forEach(env => milieux.add(env.milieu)))
+    return  [...milieux];
+  }
+
+  getMilieuxSettings() {
+    return game.settings.get(SYSTEM_RDD, SETTINGS_LISTE_MILIEUX).split(',');
+  }
+
+  async findEnvironnementsLike(search) {
+    return (await this.milieux()).filter(it => Grammar.includesLowerCaseNoAccent(it, search));
+  }
+
+  async searchToChatMessage(search) {
+    const table = await this.buildEnvironnementTable(search);
+    await CompendiumTableHelpers.tableToChatMessage(table, 'Item', 'herbe', 'Ressource naturelle');
+    return true
+  }
+
+  async getRandom(search) {
+    const table = await this.buildEnvironnementTable(search);
+    const row = await CompendiumTableHelpers.getRandom(table, 'Item', 'herbe', undefined, 'Ressource naturelle');
+    return row
+  }
+
+  async buildEnvironnementTable(search) {
+    const itemRareteEnMilieu = item => item.system?.environnement.find(env => Grammar.includesLowerCaseNoAccent(env.milieu, search));
+    const itemFrequenceEnMilieu = item => itemRareteEnMilieu(item)?.frequence ?? 0;
+    const isPresentEnMilieu = item => itemFrequenceEnMilieu(item) > 0;
+    let elements = await this.getElements(itemFrequenceEnMilieu, isPresentEnMilieu);
+    return CompendiumTableHelpers.buildTable(elements, itemFrequenceEnMilieu);
+  }
+
+
+  async getElements(itemFrequence, filter) {
+    let elements = [];
+    for (let c of COMPENDIUMS_ENVIRONNEMENT) {
+      const fromCompendium = await c.table.getContent(itemFrequence, filter);
+      elements = elements.concat(fromCompendium);
+    }
+    return elements;
+  }
+}
+
+export class EnvironmentSheetHelper {
+
+  static defaultOptions(defaultOptions, type) {
+    return mergeObject(defaultOptions, {
+      classes: ["rdd", "sheet", "item"],
+      template: `systems/foundryvtt-reve-de-dragon/templates/item-${type}-sheet.html`,
+      width: 500,
+      height: 600,
+      tabs: [{ navSelector: ".sheet-tabs", contentSelector: ".sheet-body", initial: "informations" }]
+    });
+  }
+
+  /* -------------------------------------------- */
+  static getHeaderButtons(sheet, buttons) {
+    buttons.unshift({ class: "post", icon: "fas fa-comment", onclick: ev => sheet.item.postItem() });
+    return buttons;
+  }
+
+  static setPosition(sheet, superPosition) {
+    const position = superPosition;
+    const sheetHeader = sheet.element.find(".sheet-header");
+    const sheetBody = sheet.element.find(".sheet-body");
+    sheetBody.css("height", position.height - sheetHeader[0].clientHeight)
+    return position;
+  }
+
+  /* -------------------------------------------- */
+  static async getData(sheet) {
+    const formData = duplicate(sheet.item);
+    const milieux = await game.system.rdd.environnement.milieux();
+    const milieuxDisponibles = milieux.filter(it => !sheet.item.system.environnement.find(e => e.milieu == it));
+    mergeObject(formData, {
+      title: formData.name,
+      isGM: game.user.isGM,
+      owner: sheet.actor?.isOwner,
+      isOwned: sheet.actor ? true : false,
+      actorId: sheet.actor?.id,
+      editable: sheet.isEditable,
+      cssClass: sheet.isEditable ? "editable" : "locked",
+      milieux: milieuxDisponibles
+    });
+    return formData;
+  }
+
+  static activateListeners(sheet, html) {
+    if (!sheet.options.editable) return;
+    html.find("a.milieu-add").click(event => EnvironmentSheetHelper.onAddMilieu(sheet, event));
+    html.find("div.environnement-milieu a.milieu-delete").click(event => EnvironmentSheetHelper.onDeleteMilieu(sheet, event));
+    html.find("div.environnement-milieu select.environnement-rarete").change(event => EnvironmentSheetHelper.onChange(sheet, event,
+      (updated) => {
+        const name = $(event.currentTarget).val();
+        const rarete = Environnement.getRarete(name);
+        updated.rarete = rarete.name;
+        updated.frequence = Math.min(
+          Math.max(rarete.min, updated.frequence ?? rarete.frequence),
+          rarete.max);
+      }));
+    html.find("div.environnement-milieu input[name='environnement-frequence']").change(event => EnvironmentSheetHelper.onChange(sheet, event,
+      (updated) => {
+        updated.frequence = Number($(event.currentTarget).val())
+      }));
+  }
+
+  static async onAddMilieu(sheet, event) {
+    const milieu = $("input.input-selection-milieu").val();
+    if (!milieu) {
+      ui.notifications.warn(`Choisissez le milieu dans lequel se trouve le/la ${sheet.item.name}`);
+      return
+    }
+    const list = sheet.item.system.environnement;
+    const exists = list.find(it => it.milieu == milieu);
+    if (exists) {
+      ui.notifications.warn(`${sheet.item.name} a déjà une rareté ${exists.rarete} en ${milieu} (fréquence: ${exists.frequence})`);
+      return
+    }
+    const rarete = Environnement.getRarete();
+    const newList = [...list, { milieu, rarete: rarete.name, frequence: rarete.frequence }].sort(Misc.ascending(it => it.milieu))
+    await sheet.item.update({ 'system.environnement': newList })
+  }
+
+  static async onDeleteMilieu(sheet, event) {
+    const milieu = EnvironmentSheetHelper.$getEventMilieu(event);
+    if (milieu) {
+      const newList = sheet.item.system.environnement.filter(it => it.milieu != milieu)
+        .sort(Misc.ascending(it => it.milieu));
+      await sheet.item.update({ 'system.environnement': newList });
+    }
+  }
+
+  static async onChange(sheet, event, doMutation) {
+    const list = sheet.item.system.environnement;
+    const milieu = EnvironmentSheetHelper.$getEventMilieu(event);
+    const updated = list.find(it => it.milieu == milieu);
+    if (updated) {
+      doMutation(updated);
+      const newList = [...list.filter(it => it.milieu != milieu), updated]
+        .sort(Misc.ascending(it => it.milieu));
+      await sheet.item.update({ 'system.environnement': newList });
+    }
+  }
+
+  static $getEventMilieu(event) {
+    return $(event.currentTarget)?.parents("div.environnement-milieu").data("milieu");
+  }
+
+  static template(itemType) {
+    /* -------------------------------------------- */
+    return `systems/foundryvtt-reve-de-dragon/templates/item-${itemType}-sheet.html`;
+  }
+
+  static title(item) {
+    return Misc.typeName('Item', item.type) + ': ' + item.name;
+  }
+
+}
\ No newline at end of file
diff --git a/module/item-herbe-sheet.js b/module/item-herbe-sheet.js
new file mode 100644
index 00000000..2ba7d546
--- /dev/null
+++ b/module/item-herbe-sheet.js
@@ -0,0 +1,45 @@
+import { SYSTEM_RDD } from "./constants.js";
+import { EnvironmentSheetHelper as EnvironmentItemSheet } from "./environnement.js";
+import { Misc } from "./misc.js";
+
+const ITEM_TYPE = 'herbe';
+
+export class RdDHerbeItemSheet extends ItemSheet {
+
+  static register() {
+    Items.registerSheet(SYSTEM_RDD, RdDHerbeItemSheet, {
+      label: Misc.typeName('Item', ITEM_TYPE),
+      types: [ITEM_TYPE],
+      makeDefault: true
+    });
+  }
+
+  static get defaultOptions() {
+    return EnvironmentItemSheet.defaultOptions(super.defaultOptions, ITEM_TYPE);
+  }
+
+  _getHeaderButtons() {
+    return EnvironmentItemSheet.getHeaderButtons(this, super._getHeaderButtons());
+  }
+
+  setPosition(options = {}) {
+    return EnvironmentItemSheet.setPosition(this, super.setPosition(options));
+  }
+
+  async getData() {
+    return await EnvironmentItemSheet.getData(this);
+  }
+
+  activateListeners(html) {
+    super.activateListeners(html);
+    EnvironmentItemSheet.activateListeners(this, html);
+  }
+
+  get template() {
+    return EnvironmentItemSheet.template(this.item.type);
+  }
+
+  get title() {
+    return EnvironmentItemSheet.title(this.item);
+  }
+}
diff --git a/module/item-ingredient-sheet.js b/module/item-ingredient-sheet.js
new file mode 100644
index 00000000..b5b0d322
--- /dev/null
+++ b/module/item-ingredient-sheet.js
@@ -0,0 +1,44 @@
+import { SYSTEM_RDD } from "./constants.js";
+import { EnvironmentSheetHelper } from "./environnement.js";
+import { Misc } from "./misc.js";
+
+const ITEM_TYPE = 'ingredient';
+export class RdDIngredientItemSheet extends ItemSheet {
+
+  static register() {
+    Items.registerSheet(SYSTEM_RDD, RdDIngredientItemSheet, {
+      label: Misc.typeName('Item', ITEM_TYPE),
+      types: [ITEM_TYPE],
+      makeDefault: true
+    });
+  }
+
+  static get defaultOptions() {
+    return EnvironmentSheetHelper.defaultOptions(super.defaultOptions, ITEM_TYPE);
+  }
+
+  _getHeaderButtons() {
+    return EnvironmentSheetHelper.getHeaderButtons(this, super._getHeaderButtons());
+  }
+
+  setPosition(options = {}) {
+    return EnvironmentSheetHelper.setPosition(this, super.setPosition(options));
+  }
+
+  async getData() {
+    return await EnvironmentSheetHelper.getData(this);
+  }
+
+  activateListeners(html) {
+    super.activateListeners(html);
+    EnvironmentSheetHelper.activateListeners(this, html);
+  }
+
+  get template() {
+    return EnvironmentSheetHelper.template(this.item.type);
+  }
+
+  get title() {
+    return EnvironmentSheetHelper.title(this.item);
+  }
+}
diff --git a/module/migrations.js b/module/migrations.js
index ab644b77..a6bbba97 100644
--- a/module/migrations.js
+++ b/module/migrations.js
@@ -1,6 +1,6 @@
 import { LOG_HEAD, SYSTEM_RDD } from "./constants.js";
+import { Environnement } from "./environnement.js";
 import { Grammar } from "./grammar.js";
-import { Misc } from "./misc.js";
 
 class Migration {
   get code() { return "sample"; }
@@ -179,6 +179,7 @@ class _10_2_5_ArmesTirLancer extends Migration {
     return Grammar.toLowerCaseNoAccent(it.system.competence);
   }
 }
+
 class _10_2_10_DesirLancinant_IdeeFixe extends Migration {
   get code() { return "desir-lancinat-idee-fixe"; }
   get version() { return "10.2.10"; }
@@ -240,6 +241,24 @@ class _10_3_0_Inventaire extends Migration {
   }
 }
 
+class _10_3_0_FrequenceEnvironnement extends Migration {
+  get code() { return "migration-frequence-resources"; }
+  get version() { return "10.3.0"; }
+
+  async migrate() {
+    await this.applyItemsUpdates(items => items.filter(it => ['herbe', 'ingredient'].includes(it.type))
+      .map(it => this._updatesFrequences(it)));
+  }
+
+  _updatesFrequences(it) {
+    return {
+      _id: it.id,
+      'system.rarete': undefined,
+      'system.environnement': [{ milieu: it.system.milieu, rarete: it.system.rarete, frequence: Environnement.getFrequenceRarete(it.system.rarete, 'frequence') }]
+    }
+  }
+}
+
 export class Migrations {
   static getMigrations() {
     return [
@@ -249,7 +268,8 @@ export class Migrations {
       new _10_0_33_MigrationNomsDraconic(),
       new _10_2_5_ArmesTirLancer(),
       new _10_2_10_DesirLancinant_IdeeFixe(),
-      new _10_3_0_Inventaire()
+      new _10_3_0_Inventaire(),
+      new _10_3_0_FrequenceEnvironnement()
     ];
   }
 
@@ -264,11 +284,9 @@ export class Migrations {
   }
 
   migrate() {
-    const currentVersion = game.settings.get(
-      SYSTEM_RDD,
-      "systemMigrationVersion"
-    );
-    if (isNewerVersion(game.system.version, currentVersion)) {
+    const currentVersion = game.settings.get(SYSTEM_RDD,"systemMigrationVersion");
+    //if (isNewerVersion(game.system.version, currentVersion)) {
+    if (true) { /* comment previous and uncomment here to test before upgrade  */
       const migrations = Migrations.getMigrations().filter(m => isNewerVersion(m.version, currentVersion));
       if (migrations.length > 0) {
         migrations.sort((a, b) =>
diff --git a/module/rdd-commands.js b/module/rdd-commands.js
index 5f0766da..d5f3f39e 100644
--- a/module/rdd-commands.js
+++ b/module/rdd-commands.js
@@ -13,6 +13,7 @@ import { RdDResolutionTable } from "./rdd-resolution-table.js";
 import { RdDRollResolutionTable } from "./rdd-roll-resolution-table.js";
 import { RdDRollTables } from "./rdd-rolltables.js";
 import { RdDUtility } from "./rdd-utility.js";
+import { CompendiumTableHelpers } from "./settings/system-compendiums.js";
 import { TMRUtility } from "./tmr-utility.js";
 
 const rddRollNumeric = /^(\d+)\s*([\+\-]?\d+)?\s*(s)?/;
@@ -49,7 +50,9 @@ export class RdDCommands {
           <br><strong>/table rencontre deso</strong> affiche la table des rencontres en Désolation
           <br><strong>/table rencontre mauvaise</strong> affiche la table des mauvaises rencontres`
     });
-
+    this.registerCommand({ path: ["/table", "milieu"], func: (content, msg, params) => this.tableMilieu(msg, params,'liste'), descr: "Affiche la table des trouvailles dans un milieu donné" });
+    this.registerCommand({ path: ["/tirer", "milieu"], func: (content, msg, params) => this.tableMilieu(msg, params, 'chat'), descr: "Affiche la table des trouvailles dans un milieu donné" });
+    
     this.registerCommand({ path: ["/tirer", "comp"], func: (content, msg, params) => RdDRollTables.getCompetence('chat'), descr: "Tire une compétence au hasard" });
     this.registerCommand({ path: ["/tirer", "queue"], func: (content, msg, params) => RdDRollTables.getQueue('chat'), descr: "Tire une Queue de Dragon" });
     this.registerCommand({ path: ["/tirer", "ombre"], func: (content, msg, params) => RdDRollTables.getOmbre('chat'), descr: "Tire une Ombre de Thanatos" });
@@ -363,6 +366,7 @@ export class RdDCommands {
     }
     return false;
   }
+  
   async tableRencontres(msg, params) {
     if (params && params.length > 0) {
       const search = Misc.join(params, ' ');
@@ -370,11 +374,29 @@ export class RdDCommands {
       if (solvedTerrain == undefined) {
         return RdDCommands._chatAnswer(msg, 'Aucune TMR correspondant à ' + search);
       }
-      return game.system.rdd.rencontresTMR.chatTable(solvedTerrain);
+      return await game.system.rdd.rencontresTMR.chatTable(solvedTerrain);
     }
     return false;
   }
 
+  async tableMilieu(msg, params, toChat) {
+    if (params && params.length > 0) {
+      const search = Misc.join(params, ' ');
+      const searches = game.system.rdd.environnement.findEnvironnementsLike(search);
+      if (searches.length == 0) {
+        return RdDCommands._chatAnswer(msg, 'Aucun milieu correspondant à ' + search);
+      }
+      if (toChat == 'liste') {
+        return await game.system.rdd.environnement.searchToChatMessage(search);
+      }
+      else {
+        const row = await game.system.rdd.environnement.getRandom(search);
+        await CompendiumTableHelpers.tableRowToChatMessage(row, 'Item');
+        return true;
+      }
+    }
+    return false;
+  }
   /* -------------------------------------------- */
   getCoutXpComp(msg, params) {
     if (params && (params.length == 1 || params.length == 2)) {
diff --git a/module/rdd-main.js b/module/rdd-main.js
index d7bad8a6..50f49f90 100644
--- a/module/rdd-main.js
+++ b/module/rdd-main.js
@@ -39,6 +39,9 @@ import { DialogChronologie } from "./dialog-chronologie.js";
 import { SystemCompendiums } from "./settings/system-compendiums.js";
 import { RdDRencontreItemSheet } from "./item-rencontre-sheet.js";
 import { TMRRencontres } from "./tmr-rencontres.js";
+import { RdDHerbeItemSheet } from "./item-herbe-sheet.js";
+import { Environnement } from "./environnement.js";
+import { RdDIngredientItemSheet } from "./item-ingredient-sheet.js";
 
 /* -------------------------------------------- */
 /*  Foundry VTT Initialization                  */
@@ -194,11 +197,13 @@ Hooks.once("init", async function () {
     types: ["rencontre"],
     makeDefault: true
   });
+  RdDHerbeItemSheet.register();
+  RdDIngredientItemSheet.register();
   Items.registerSheet(SYSTEM_RDD, RdDItemSheet, {
     types: [
       "competence", "competencecreature",
       "recettealchimique", "musique", "chant", "danse", "jeu", "recettecuisine", "oeuvre",
-      "objet", "arme", "armure", "conteneur", "herbe", "ingredient", "livre", "potion", "munition",
+      "objet", "arme", "armure", "conteneur", "livre", "potion", "munition",
       "monnaie", "nourritureboisson", "gemme",
       "meditation", "queue", "ombre", "souffle", "tete", "casetmr", "sort", "sortreserve",
       "nombreastral", "tache", "maladie", "poison", "possession",
@@ -224,6 +229,7 @@ Hooks.once("init", async function () {
   RdDHotbar.initDropbar();
   RdDPossession.init();
   TMRRencontres.init();
+  Environnement.init();
 });
 
 /* -------------------------------------------- */
diff --git a/module/rdd-rolltables.js b/module/rdd-rolltables.js
index cf557a4c..0c8d50d2 100644
--- a/module/rdd-rolltables.js
+++ b/module/rdd-rolltables.js
@@ -1,5 +1,5 @@
 import { Grammar } from "./grammar.js";
-import { SystemCompendiums } from "./settings/system-compendiums.js";
+import { CompendiumTable, CompendiumTableHelpers, SystemCompendiums } from "./settings/system-compendiums.js";
 
 export class RdDRollTables {
 
@@ -37,7 +37,7 @@ export class RdDRollTables {
   /* -------------------------------------------- */
   static async getCompetence(toChat = false) {
     if (toChat == 'liste') {
-      return await SystemCompendiums.chatTableItems('competences', 'Item', 'competence', it => 1);
+      return await RdDRollTables.listOrRoll('competences', 'Item', 'competence', toChat, it => 1);
     }
     else {
       return await RdDRollTables.drawItemFromRollTable("Détermination aléatoire de compétence", toChat);
@@ -55,13 +55,15 @@ export class RdDRollTables {
   }
 
   static async getDesirLancinant(toChat = false) {
-    return await RdDRollTables.listOrRoll('queues-de-dragon', 'Item', 'queue', toChat, it => it.system.frequence,
-      it => it.system.categorie == 'lancinant' );
+    return await RdDRollTables.listOrRoll('queues-de-dragon', 'Item', 'queue', toChat,
+      it => it.system.frequence,
+      it => it.system.categorie == 'lancinant');
   }
 
   static async getIdeeFixe(toChat = false) {
-    return await RdDRollTables.listOrRoll('queues-de-dragon', 'Item', 'queue', toChat, it => it.system.frequence,
-      it => it.system.categorie == 'ideefixe' );
+    return await RdDRollTables.listOrRoll('queues-de-dragon', 'Item', 'queue', toChat,
+      it => it.system.frequence,
+      it => it.system.categorie == 'ideefixe');
   }
 
   /* -------------------------------------------- */
@@ -86,10 +88,15 @@ export class RdDRollTables {
 
   /* -------------------------------------------- */
   static async listOrRoll(compendium, type, subType, toChat, itemFrequence = it => it.system.frequence, filter = it => true) {
+    const table = new CompendiumTable(compendium, type, subType);
     if (toChat == 'liste') {
-      return await SystemCompendiums.chatTableItems(compendium, type, subType, itemFrequence, filter);
+      return await table.toChatMessage(itemFrequence, filter);
     }
-    return await SystemCompendiums.getRandom(compendium, type, subType, toChat, itemFrequence, filter);
+    const row = await table.getRandom(itemFrequence, filter);
+    if (row) {
+      await CompendiumTableHelpers.tableRowToChatMessage(row, type);
+    }
+    return row;
   }
 
   /* -------------------------------------------- */
diff --git a/module/rdd-utility.js b/module/rdd-utility.js
index ba4cdf82..c747e221 100644
--- a/module/rdd-utility.js
+++ b/module/rdd-utility.js
@@ -15,6 +15,7 @@ import { RdDNameGen } from "./rdd-namegen.js";
 import { RdDConfirm } from "./rdd-confirm.js";
 import { RdDCalendrier } from "./rdd-calendrier.js";
 import { RdDCarac } from "./rdd-carac.js";
+import { Environnement } from "./environnement.js";
 
 /* -------------------------------------------- */
 // This table starts at 0 -> niveau -10
@@ -169,7 +170,11 @@ export class RdDUtility {
       'systems/foundryvtt-reve-de-dragon/templates/actor/liens-suivants.html',
       'systems/foundryvtt-reve-de-dragon/templates/actor/liens-vehicules.html',
       //Items
+      'systems/foundryvtt-reve-de-dragon/templates/scripts/autocomplete-script.hbs',
+      'systems/foundryvtt-reve-de-dragon/templates/scripts/autocomplete.hbs',
       'systems/foundryvtt-reve-de-dragon/templates/item/partial-inventaire.html',
+      'systems/foundryvtt-reve-de-dragon/templates/item/partial-environnement.html',
+      'systems/foundryvtt-reve-de-dragon/templates/item/partial-tab-environnement.html',
       'systems/foundryvtt-reve-de-dragon/templates/header-item.html',
       'systems/foundryvtt-reve-de-dragon/templates/item-competence-sheet.html',
       'systems/foundryvtt-reve-de-dragon/templates/item-competencecreature-sheet.html',
@@ -326,7 +331,8 @@ export class RdDUtility {
     Handlebars.registerHelper('linkCompendium', (compendium, id, name) => `@Compendium[${compendium}.${id}]{${name}}`);
     Handlebars.registerHelper('uniteQuantite', (type) => RdDItem.getUniteQuantite(type));
     Handlebars.registerHelper('isEquipementFieldEditable', (type, field) => RdDItem.isEquipementFieldEditable(type, field));
-
+    Handlebars.registerHelper('getFrequenceRarete', (rarete, field) => Environnement.getFrequenceRarete(rarete, field));
+    Handlebars.registerHelper('either', (a, b) => a ?? b);
     return loadTemplates(templatePaths);
   }
 
diff --git a/module/settings/system-compendiums.js b/module/settings/system-compendiums.js
index b4d95bc4..d562e4bb 100644
--- a/module/settings/system-compendiums.js
+++ b/module/settings/system-compendiums.js
@@ -16,8 +16,13 @@ const CONFIGURABLE_COMPENDIUMS = {
   'rencontres': { label: "Rencontres dans les TMR", type: "Item" },
   'tetes-de-dragon-pour-haut-revants': { label: "Têtes de dragons (haut-rêvant)", type: "Item" },
   'tetes-de-dragon-pour-tous-personnages': { label: "Têtes de dragons (tous)", type: "Item" },
+  'botanique': { label: "Herbes & plantes", type: "Item" },
+  'equipement': { label: "Equipements", type: "Item" },
 }
 
+/**
+ * ======= Gestion des accès aux compendiums systèmes (ou surchargés) =======
+ */
 export class SystemCompendiums extends FormApplication {
   static init() {
     Object.keys(CONFIGURABLE_COMPENDIUMS).forEach(compendium => {
@@ -50,7 +55,7 @@ export class SystemCompendiums extends FormApplication {
     return game.packs.get(SystemCompendiums.getCompendium(compendium));
   }
 
-  static async getContent(compendium, docType) {
+  static async getPackContent(compendium, docType) {
     const pack = SystemCompendiums.getPack(compendium);
     if (pack.metadata.type == docType) {
       return await pack.getDocuments();
@@ -83,35 +88,17 @@ export class SystemCompendiums extends FormApplication {
   }
 
   static async getItems(compendium, itemType = undefined) {
-    const items = await SystemCompendiums.getContent(compendium, 'Item');
+    const items = await SystemCompendiums.getPackContent(compendium, 'Item');
     return (itemType ? items.filter(it => it.type == itemType) : items);
   }
 
-  static async buildTable(compendium, itemFrequence, filter, type = 'Item', sorting = undefined) {
-    let elements = await SystemCompendiums.getContent(compendium, type);
-    elements = elements.filter(filter).filter(it => itemFrequence(it) > 0)
+  static async getContent(compendium, type, filter, itemFrequence, sorting) {
+    let elements = await SystemCompendiums.getPackContent(compendium, type);
+    elements = elements.filter(filter).filter(it => itemFrequence(it) > 0);
     if (sorting) {
       elements = elements.sort(sorting);
     }
-    let max = 0;
-    const table = elements
-      .map(it => {
-        const frequence = itemFrequence(it)
-        let row = { document: it, frequence: frequence, min: max + 1, max: max + frequence }
-        max += frequence;
-        return row;
-      });
-    table.forEach(it => it.total = max);
-    return table;
-  }
-
-  static async getRandom(compendium, type, subType, toChat = true, itemFrequence = it => it.system.frequence, filter = it => true) {
-    const table = new SystemCompendiumTable(compendium, type, subType);
-    return await table.getRandom(toChat, itemFrequence, filter);
-  }
-  static async chatTableItems(compendium, type, subType, itemFrequence = it => it.system.frequence, filter = it => true) {
-    const table = new SystemCompendiumTable(compendium, type, subType, itemFrequence);
-    await table.chatTable(itemFrequence, filter);
+    return elements;
   }
 
   static async getDefaultItems(compendium) {
@@ -180,48 +167,69 @@ export class SystemCompendiums extends FormApplication {
   }
 }
 
-export class SystemCompendiumTable {
+/**
+ * ======= Gestion de jets dans une table correspondant à un compendium =======
+ */
+export class CompendiumTable {
 
   constructor(compendium, type, subType, sorting = undefined) {
     this.compendium = compendium;
     this.type = type;
     this.subType = subType;
-    this.compendium = compendium;
-    this.sourceCompendium = SystemCompendiums.getCompendium(compendium);
-    this.sorting = sorting
+    this.sorting = sorting ?? Misc.ascending(it => it.name);
   }
 
-  typeName() {
-    return Misc.typeName(this.type, this.subType);
-  }
-  applyType(filter) {
-    return it => it.type == this.subType && filter(it);
+  async getContent(itemFrequence = it => it.system.frequence, filter = it => true) {
+    return await SystemCompendiums.getContent(this.compendium,
+      this.type,
+      it => this.subType == it.type && filter(it),
+      itemFrequence,
+      this.sorting);
   }
 
-  async getRandom(toChat = true, itemFrequence = it => it.system.frequence, filter = it => true, forcedRoll = undefined) {
-    const table = await this.$buildTable(itemFrequence, filter);
+  async buildTable(itemFrequence = it => it.system.frequence, filter = it => true) {
+    const elements = await this.getContent(filter, itemFrequence);
+    return CompendiumTableHelpers.buildTable(elements, itemFrequence);
+  }
+
+  async getRandom(itemFrequence = it => it.system.frequence, filter = it => true, forcedRoll = undefined) {
+    const table = await this.buildTable(itemFrequence, filter);
+    return await CompendiumTableHelpers.getRandom(table, this.type, this.subType, forcedRoll, SystemCompendiums.getCompendium(compendium));
+  }
+
+  async toChatMessage(itemFrequence = it => it.system.frequence, filter = it => true, typeName = undefined) {
+    const table = await this.buildTable(itemFrequence, filter);
+    await CompendiumTableHelpers.tableToChatMessage(table, this.type, this.subType, typeName);
+    return true;
+  }
+}
+
+/**
+ * ======= Gestion de tables correspondant à un compendium =======
+ */
+export class CompendiumTableHelpers {
+
+  static buildTable(elements, itemFrequence) {
+    let max = 0;
+    const total = elements.map(it => itemFrequence(it)).reduce(Misc.sum(), 0);
+    return elements.map(it => {
+        const frequence = itemFrequence(it);
+        let row = { document: it, frequence: frequence, min: max + 1, max: max + frequence, total: total };
+        max += frequence;
+        return row;
+      });
+  }
+
+  static async getRandom(table, type, subType, forcedRoll = undefined, localisation = undefined) {
     if (table.length == 0) {
-      ui.notifications.warn(`Aucun ${this.typeName()} dans ${this.sourceCompendium}`);
+      ui.notifications.warn(`Aucun ${Misc.typeName(type, subType)} trouvé dans ${localisation ?? ' les compendiums'}`);
       return undefined;
     }
-    const row = await this.$selectRow(table, forcedRoll);
-    if (row && toChat) {
-      await this.$chatRolledResult(row);
-    }
-    return row;
-  }
-
-  async chatTable(itemFrequence = it => it.system.frequence, filter = it => true, typeName = undefined) {
-    const table = await this.$buildTable(itemFrequence, filter);
-    await this.$chatSystemCompendiumTable(table, typeName);
-  }
-
-  async $buildTable(itemFrequence, filter) {
-    return await SystemCompendiums.buildTable(this.compendium, itemFrequence, this.applyType(filter), this.type, this.sorting);
+    return await CompendiumTableHelpers.selectRow(table, forcedRoll);
   }
 
   /* -------------------------------------------- */
-  async $selectRow(table, forcedRoll = undefined) {
+  static async selectRow(table, forcedRoll = undefined) {
     if (table.length == 0) {
       return undefined
     }
@@ -238,14 +246,16 @@ export class SystemCompendiumTable {
   }
 
   /* -------------------------------------------- */
-  async $chatRolledResult(row) {
+  static async tableRowToChatMessage(row, type = 'Item') {
+    if (!row) {
+      return;
+    }
     const percentages = (row.total == 100) ? '%' : ''
     const flavorContent = await renderTemplate('systems/foundryvtt-reve-de-dragon/templates/chat-compendium-table-roll.html', {
       roll: row.roll,
-      document: row?.document,
+      document: row.document,
       percentages,
-      typeName: this.typeName(),
-      sourceCompendium: this.sourceCompendium,
+      typeName: Misc.typeName(type, row.document.type),
       isGM: game.user.isGM,
     });
     const messageData = {
@@ -260,11 +270,10 @@ export class SystemCompendiumTable {
   }
 
   /* -------------------------------------------- */
-  async $chatSystemCompendiumTable(table, typeName) {
+  static async tableToChatMessage(table, type, subType, typeName = undefined) {
     const flavorContent = await renderTemplate('systems/foundryvtt-reve-de-dragon/templates/chat-compendium-table.html', {
-      img: RdDItem.getDefaultImg(this.subType),
-      typeName: typeName ?? this.typeName(),
-      sourceCompendium: this.sourceCompendium,
+      img: RdDItem.getDefaultImg(subType),
+      typeName: typeName ?? Misc.typeName(type, subType),
       table,
       isGM: game.user.isGM,
     });
@@ -275,5 +284,4 @@ export class SystemCompendiumTable {
     }, { rollMode: "gmroll" });
   }
 
-
-}
+}
\ No newline at end of file
diff --git a/module/tmr-rencontres.js b/module/tmr-rencontres.js
index 44cb488e..0bbe46b3 100644
--- a/module/tmr-rencontres.js
+++ b/module/tmr-rencontres.js
@@ -1,7 +1,7 @@
 import { Grammar } from "./grammar.js";
 import { Misc } from "./misc.js";
 import { RdDDice } from "./rdd-dice.js";
-import { SystemCompendiums, SystemCompendiumTable } from "./settings/system-compendiums.js";
+import { SystemCompendiums, CompendiumTable, CompendiumTableHelpers } from "./settings/system-compendiums.js";
 import { TMRUtility } from "./tmr-utility.js";
 
 
@@ -15,7 +15,7 @@ export class TMRRencontres {
   }
 
   constructor(){
-    this.table = new SystemCompendiumTable('rencontres', 'Item', 'rencontre', Misc.ascending(it => it.system.ordreTri));
+    this.table = new CompendiumTable('rencontres', 'Item', 'rencontre', Misc.ascending(it => it.system.ordreTri));
   }
 
   /* -------------------------------------------- */
@@ -36,9 +36,12 @@ export class TMRRencontres {
     const codeTerrain = Grammar.toLowerCaseNoAccent(terrain)
     const filtreMauvaise = codeTerrain == 'mauvaise' ? it => it.system.mauvaiseRencontre : it => !it.system.mauvaiseRencontre;
     const frequence = it => it.system.frequence[codeTerrain];
-    const random = await this.table.getRandom(true, frequence, filtreMauvaise, forcedRoll);
+    const row = await this.table.getRandom(frequence, filtreMauvaise, forcedRoll);
+    if (row) {
+      await CompendiumTableHelpers.tableRowToChatMessage(row);
+    }
 
-    return random?.document;
+    return row?.document;
   }
 
   async chatTable(terrain) {
@@ -47,9 +50,9 @@ export class TMRRencontres {
     const filtreMauvaise = isMauvaise ? it => it.system.mauvaiseRencontre : it => !it.system.mauvaiseRencontre;
     const frequence = it => it.system.frequence[codeTerrain];
     const typeName = isMauvaise ? 'Mauvaises rencontres' : `Rencontres en ${Misc.upperFirst(terrain)}`;
-    await this.table.chatTable(frequence, filtreMauvaise, typeName);
-    return true
+    return await this.table.toChatMessage(frequence, filtreMauvaise, typeName);
   }
+
   /* -------------------------------------------- */
   async createRencontre(rencontre, tmr = undefined) {
     return rencontre.clone({
@@ -95,7 +98,7 @@ export class TMRRencontres {
     const filtreMauvaise = codeTerrain == 'mauvaise' ? it => it.system.mauvaiseRencontre : it => !it.system.mauvaiseRencontre;
     const frequence = it => it.system.frequence[codeTerrain];
 
-    const row = await this.table.getRandom(false, frequence, filtreMauvaise);
+    const row = await this.table.getRandom(frequence, filtreMauvaise);
     if (row) {
       row.document = this.createRencontre(row.document, tmr);
       await this.$chatRolledRencontre(row, tmr);
diff --git a/styles/simple.css b/styles/simple.css
index fb8213c6..2c69cd41 100644
--- a/styles/simple.css
+++ b/styles/simple.css
@@ -1738,7 +1738,41 @@ display: inline-flex;
 /* Change color of dropdown links on hover */
 .button-dropdown-content a:hover {background-color: #ddd;}
 
+/* ======== autocomplete ======= */
+.autocomplete {
+  position: relative;
+  display: inline-block;
+}
 
+.autocomplete-items {
+  position: absolute;
+  border: 1px solid var(--color-border-dark);
+  border-bottom: none;
+  border-top: none;
+  z-index: 99;
+  /*position the autocomplete items to be the same width as the container:*/
+  top: 100%;
+  left: 0;
+  right: 0;
+}
+
+.autocomplete-items div {
+  padding: 10px;
+  cursor: pointer;
+  background-color: #fff; 
+  border-bottom: 1px solid #d4d4d4; 
+}
+
+/*when hovering an item:*/
+.autocomplete-items div:hover {
+  background-color: #e9e9e9; 
+}
+
+/*when navigating through the items using the arrow keys:*/
+.autocomplete-active {
+  background-color: DodgerBlue !important; 
+  color: #ffffff; 
+}
 
 /*************************************************************/
 #pause
diff --git a/template.json b/template.json
index 4321104c..27c37132 100644
--- a/template.json
+++ b/template.json
@@ -591,6 +591,10 @@
         "quantite": 1,
         "qualite": 0,
         "cout": 0
+      },
+      "environnement": {
+        "milieu": "",
+        "environnement": []
       }
     },
     "competence": {
@@ -704,19 +708,15 @@
       "exotisme": 0
     },
     "herbe": {
-      "templates": [ "description", "inventaire" ],
+      "templates": [ "description", "inventaire", "environnement"],
       "niveau": 0,
       "base": 0,
-      "milieu": "",
-      "rarete": "",
       "categorie": ""
     },
     "ingredient": {
-      "templates": [ "description", "inventaire" ],
+      "templates": [ "description", "inventaire", "environnement" ],
       "niveau": 0,
       "base": 0,
-      "milieu": "",
-      "rarete": "",
       "categorie": ""
     },
     "livre": {
diff --git a/templates/chat-compendium-table-roll-rencontre.html b/templates/chat-compendium-table-roll-rencontre.html
index bb951c88..2b724e95 100644
--- a/templates/chat-compendium-table-roll-rencontre.html
+++ b/templates/chat-compendium-table-roll-rencontre.html
@@ -1,11 +1,11 @@
 <img class="chat-icon" src="{{rencontre.img}}" alt="{{rencontre.name}}" />
 <h4>{{#if mauvaise}}Mauvaise rencontre{{else}}Rencontre{{/if}} en {{typeTmr-name tmr.type}}</h4>
-<div>{{sourceCompendium}}</div>
+<div>{{rencontre.pack}}</div>
 <div>Jet: {{roll.formula}} : {{roll.total}}{{percentages}}</div>
 <hr>
 <div>
   <p>{{rencontre.name}} {{rencontre.system.force}} ({{rencontre.system.formule}})</p>
-  <p>{{linkCompendium sourceCompendium rencontre.id rencontre.name}}</p>
+  <p>{{linkCompendium rencontre.pack rencontre.id rencontre.name}}</p>
   {{#if rencontre.system.description}}
   <div class="poesie-extrait">
     {{{rencontre.system.description}}}
diff --git a/templates/chat-compendium-table-roll.html b/templates/chat-compendium-table-roll.html
index c131780d..a317d31c 100644
--- a/templates/chat-compendium-table-roll.html
+++ b/templates/chat-compendium-table-roll.html
@@ -1,10 +1,10 @@
 <h4>Tirage aléatoire: {{typeName}}</h4>
-<div>{{sourceCompendium}}</div>
+<div>{{document.pack}}</div>
 <div>Jet {{roll.formula}} : {{roll.total}}{{percentages}}</div>
 <hr>
 <div>
   <img class="chat-icon" src="{{document.img}}" alt="{{document.name}}" />
-  <p>{{linkCompendium @root.sourceCompendium document.id document.name}}</p>
+  <p>{{linkCompendium document.pack document.id document.name}}</p>
   {{#if document.system.description}}
   <div class="poesie-extrait">
     {{{document.system.description}}}
diff --git a/templates/chat-compendium-table.html b/templates/chat-compendium-table.html
index caef27d8..198323a8 100644
--- a/templates/chat-compendium-table.html
+++ b/templates/chat-compendium-table.html
@@ -1,7 +1,11 @@
 <div>
   <img class="chat-icon" src="{{img}}" alt="{{typeName}}" />
   <h4>Table aléatoire: {{typeName}}</h4>
-  <div>{{sourceCompendium}}</div>
+  {{#with (lookup table 0) as |row|}}
+  <div>
+    {{row.document.pack}}
+  </div>
+  {{/with}}
   <br>
 </div>
 <div>
@@ -9,7 +13,7 @@
     {{#each table as |row|}}
     <li class="select-target item list-item" >
       <span>{{row.min}}{{#unless (eq row.min row.max)}}-{{row.max}}{{/unless}} : &nbsp;</span>
-      <span>{{linkCompendium @root.sourceCompendium row.document.id row.document.name}}</span>
+      <span>{{linkCompendium row.document.pack row.document.id row.document.name}}</span>
     </li>
     {{/each}}
   </ul>
diff --git a/templates/enum-rarete.html b/templates/enum-rarete.html
index 667b2c76..f7fdc4ba 100644
--- a/templates/enum-rarete.html
+++ b/templates/enum-rarete.html
@@ -1,4 +1,3 @@
-<option value=""></option>
 <option value="Commune">Commune</option>
 <option value="Frequente">Fréquente</option>
 <option value="Rare">Rare</option>
diff --git a/templates/item-herbe-sheet.html b/templates/item-herbe-sheet.html
index 8f520f64..da561fee 100644
--- a/templates/item-herbe-sheet.html
+++ b/templates/item-herbe-sheet.html
@@ -11,38 +11,31 @@
     </div>
   </header>
 
-  {{!-- Sheet Body --}}
+  <nav class="sheet-tabs tabs" data-group="primary">
+    <a class="item" data-tab="informations">Informations</a>
+    {{>"systems/foundryvtt-reve-de-dragon/templates/item/partial-tab-environnement.html"}}
+  </nav>
+
   <section class="sheet-body">
-    <div class="flexcol">
-      <div class="form-group">
-        <label>Niveau (si applicable)</label>
-        <input class="attribute-value" type="text" name="system.niveau" value="{{system.niveau}}" data-dtype="Number" />
+    <div class="tab items" data-group="primary" data-tab="informations">
+      <div class="flexcol">
+        <div class="form-group">
+          <label>Niveau (si applicable)</label>
+          <input class="attribute-value" type="text" name="system.niveau" value="{{system.niveau}}" data-dtype="Number" />
+        </div>
+        <div class="form-group">
+          <label>Catégorie</label>
+          <select name="system.categorie" class="categorie" data-dtype="String">
+            {{#select system.categorie}}
+            {{>"systems/foundryvtt-reve-de-dragon/templates/enum-categorie-ingredient.html"}}
+            {{/select}}
+          </select>
+        </div>
+        
+        {{>"systems/foundryvtt-reve-de-dragon/templates/item/partial-inventaire.html"}}
+        {{>"systems/foundryvtt-reve-de-dragon/templates/partial-item-description.html"}}
       </div>
-      <div class="form-group">
-        <label>Milieu</label>
-        <input class="attribute-value" type="text" name="system.milieu" value="{{system.milieu}}" data-dtype="String" />
-      </div>
-      <div class="form-group">
-        <label>Fréquence</label>
-        <select name="system.rarete" class="rarete" data-dtype="String">
-          {{#select system.rarete}}
-          {{>"systems/foundryvtt-reve-de-dragon/templates/enum-rarete.html"}}
-          {{/select}}
-        </select>
-      </div>
-      <div class="form-group">
-        <label>Catégorie</label>
-        <select name="system.categorie" class="categorie" data-dtype="String">
-          {{#select system.categorie}}
-          {{>"systems/foundryvtt-reve-de-dragon/templates/enum-categorie-ingredient.html"}}
-          {{/select}}
-        </select>
-      </div>
-
-      {{>"systems/foundryvtt-reve-de-dragon/templates/item/partial-inventaire.html"}}
-      {{>"systems/foundryvtt-reve-de-dragon/templates/partial-item-description.html"}}
-    
     </div>
+    {{>"systems/foundryvtt-reve-de-dragon/templates/item/partial-environnement.html"}}
   </section>
-
 </form>
\ No newline at end of file
diff --git a/templates/item-ingredient-sheet.html b/templates/item-ingredient-sheet.html
index 66035c4b..687e3f88 100644
--- a/templates/item-ingredient-sheet.html
+++ b/templates/item-ingredient-sheet.html
@@ -1,34 +1,28 @@
 <form class="{{cssClass}}" autocomplete="off">
   {{>"systems/foundryvtt-reve-de-dragon/templates/header-item.html"}}
 
-  {{!-- Sheet Body --}}
-  <section class="sheet-body">
-    <div class="form-group">
-      <label>Niveau (si applicable) </label>
-      <input class="attribute-value" type="text" name="system.niveau" value="{{system.niveau}}" data-dtype="Number" />
-    </div>
-    <div class="form-group">
-      <label>Milieu</label>
-      <input class="attribute-value" type="text" name="system.milieu" value="{{system.milieu}}" data-dtype="String" />
-    </div>
-    <div class="form-group">
-      <label>Fréquence</label>
-      <select name="system.rarete" class="rarete" data-dtype="String">
-        {{#select system.rarete}}
-        {{>"systems/foundryvtt-reve-de-dragon/templates/enum-rarete.html"}}
-        {{/select}}
-      </select>
-    </div>
-    <div class="form-group">
-      <label>Catégorie</label>
-      <select name="system.categorie" class="categorie" data-dtype="String">
-        {{#select system.categorie}}
-        {{>"systems/foundryvtt-reve-de-dragon/templates/enum-categorie-ingredient.html"}}
-        {{/select}}
-      </select>
-    </div>
+  <nav class="sheet-tabs tabs" data-group="primary">
+    <a class="item" data-tab="informations">Informations</a>
+    {{>"systems/foundryvtt-reve-de-dragon/templates/item/partial-tab-environnement.html"}}
+  </nav>
 
-    {{>"systems/foundryvtt-reve-de-dragon/templates/item/partial-inventaire.html"}}
-    {{>"systems/foundryvtt-reve-de-dragon/templates/partial-item-description.html"}}
+  <section class="sheet-body">
+    <div class="tab items" data-group="primary" data-tab="informations">
+      <div class="form-group">
+        <label>Niveau (si applicable) </label>
+        <input class="attribute-value" type="text" name="system.niveau" value="{{system.niveau}}" data-dtype="Number" />
+      </div>
+      <div class="form-group">
+        <label>Catégorie</label>
+        <select name="system.categorie" class="categorie" data-dtype="String">
+          {{#select system.categorie}}
+          {{>"systems/foundryvtt-reve-de-dragon/templates/enum-categorie-ingredient.html"}}
+          {{/select}}
+        </select>
+      </div>
+      {{>"systems/foundryvtt-reve-de-dragon/templates/item/partial-inventaire.html"}}
+      {{>"systems/foundryvtt-reve-de-dragon/templates/partial-item-description.html"}}
+    </div>
+    {{>"systems/foundryvtt-reve-de-dragon/templates/item/partial-environnement.html"}}
   </section>
 </form>
\ No newline at end of file
diff --git a/templates/item-potion-sheet.html b/templates/item-potion-sheet.html
index 282e36fd..f696d0e5 100644
--- a/templates/item-potion-sheet.html
+++ b/templates/item-potion-sheet.html
@@ -17,6 +17,7 @@
       <label>Fréquence</label>
       <select name="system.rarete" class="rarete" data-dtype="String">
         {{#select system.rarete}}
+        <option value=""></option>
         {{>"systems/foundryvtt-reve-de-dragon/templates/enum-rarete.html"}}
         {{/select}}
       </select>
diff --git a/templates/item/partial-environnement.html b/templates/item/partial-environnement.html
new file mode 100644
index 00000000..df0ab650
--- /dev/null
+++ b/templates/item/partial-environnement.html
@@ -0,0 +1,36 @@
+{{>'systems/foundryvtt-reve-de-dragon/templates/scripts/autocomplete-script.hbs'}}
+
+<div class="tab items" data-group="primary" data-tab="environnement">
+  <div class="form-group">
+    <label>Description du milieu</label>
+    <input class="attribute-value" type="text" name="system.milieu" value="{{system.milieu}}" data-dtype="String" />
+  </div>
+  <hr>
+  <div class="form-group">
+    <label>Ajouter un fréquence</label>
+    <div class="flexrow">
+      <div class="autocomplete">
+        <input type="text" class="input-selection-milieu" placeholder="Milieu" data-dtype="String"/>
+      </div>
+      {{>'systems/foundryvtt-reve-de-dragon/templates/scripts/autocomplete.hbs' proposals=milieux className='input-selection-milieu'}}
+      <a class="milieu-add"><i class="fas fa-plus-circle"></i></a>
+    </div>
+  </div>
+  {{#each system.environnement as |env|}}
+  <div class="form-group environnement-milieu" data-milieu="{{env.milieu}}">
+    <label>
+      {{env.milieu}}
+      <a class="milieu-delete" title="Supprimer {{env.milieu}}"><i class="fas fa-trash"></i></a>
+    </label>
+    <div class="flexrow">
+      <select class="environnement-rarete" class="flex-shrink" data-dtype="String">
+        {{#select env.rarete}}
+        {{>"systems/foundryvtt-reve-de-dragon/templates/enum-rarete.html"}}
+        {{/select}}
+      </select>
+      {{rangePicker name="environnement-frequence" value=env.frequence min=(getFrequenceRarete env.rarete 'min') max=(getFrequenceRarete env.rarete 'max') step=1}}
+      <label>[{{getFrequenceRarete env.rarete 'min'}}-{{getFrequenceRarete env.rarete 'max'}}]</label>
+    </div>
+  </div>
+  {{/each}}
+</div>
\ No newline at end of file
diff --git a/templates/item/partial-tab-environnement.html b/templates/item/partial-tab-environnement.html
new file mode 100644
index 00000000..4154ef58
--- /dev/null
+++ b/templates/item/partial-tab-environnement.html
@@ -0,0 +1 @@
+<a class="item" data-tab="environnement">Environnement</a>
diff --git a/templates/scripts/autocomplete-script.hbs b/templates/scripts/autocomplete-script.hbs
new file mode 100644
index 00000000..7f918b6c
--- /dev/null
+++ b/templates/scripts/autocomplete-script.hbs
@@ -0,0 +1,96 @@
+<script>
+function autocomplete(input, proposals) {
+  var currentFocus;
+
+  function createCompletionContainer(id) {
+    let div = document.createElement("DIV");
+    div.setAttribute("id", id + "autocomplete-list");
+    div.setAttribute("class", "autocomplete-items");
+    return div;
+  }
+
+  function createCompletionProposal(inputElement, incomplete, complete) {
+    let div = document.createElement("DIV");
+    /*make the matching letters bold:*/
+    const start = complete.toUpperCase().indexOf(incomplete.toUpperCase());
+    div.innerHTML = complete.substr(0, start)
+      + "<strong>" + complete.substr(start, incomplete.length) + "</strong>"
+      + complete.substr(start+incomplete.length)
+    /*insert a input field that will hold the current array item's value:*/
+      + "<input type='hidden' value='" + complete + "'>";
+    /*execute a function when someone clicks on the item value (DIV element):*/
+    div.addEventListener("click", function(e) {
+        /*insert the value for the autocomplete text field:*/
+        inputElement.value = this.getElementsByTagName("input")[0].value;
+        /*close the list of autocompleted values, or any other open lists of autocompleted values:*/
+        closeAllOpenedLists();
+    });
+    return div;
+  }
+
+  function addActive(x) {
+    if (!x) return false;
+    removeActive(x);
+    if (currentFocus >= x.length) currentFocus = 0;
+    if (currentFocus < 0) currentFocus = (x.length - 1);
+    x[currentFocus].classList.add("autocomplete-active");
+  }
+
+  function removeActive(x) {
+    for (var i = 0; i < x.length; i++) {
+      x[i].classList.remove("autocomplete-active");
+    }
+  }
+
+  function closeAllOpenedLists(elmnt) {
+    /*close all autocomplete lists in the document, except the one passed as an argument:*/
+    var x = document.getElementsByClassName("autocomplete-items");
+    for (var i = 0; i < x.length; i++) {
+      if (elmnt != x[i] && elmnt != input) {
+        x[i].parentNode.removeChild(x[i]);
+      }
+    }
+  }
+
+  /*execute a function when someone writes in the text field:*/
+  input.addEventListener("input", function(e) {
+    const incomplete = this.value;
+    closeAllOpenedLists();
+    if (!incomplete) { return false; }
+
+    currentFocus = -1;
+    const container = createCompletionContainer(this.id)
+    this.parentNode.appendChild(container);
+    /*for each item in the array...*/
+    for (let i = 0; i < proposals.length; i++) {
+      /*check if the item starts with the same letters as the text field value:*/
+      if (proposals[i].toUpperCase().includes(incomplete.toUpperCase())) {
+        /*create a DIV element for each matching element:*/
+        container.appendChild(createCompletionProposal(input, incomplete, proposals[i]));
+      }
+    }
+  });
+
+  /*execute a function presses a key on the keyboard:*/
+  input.addEventListener("keydown", function(e) {
+      var container = document.getElementById(this.id + "autocomplete-list")?.getElementsByTagName("div");
+      if (e.keyCode == 40) {
+        currentFocus++;
+        addActive(container);
+      } else if (e.keyCode == 38) { //up
+        currentFocus--;
+        addActive(container);
+      } else if (e.keyCode == 13) {
+        e.preventDefault();
+        if (currentFocus > -1 && container) {
+          container[currentFocus].click();
+        }
+      }
+  });
+
+  /*execute a function when someone clicks in the document:*/
+  document.addEventListener("click", function (e) {
+      closeAllOpenedLists(e.target);
+  });
+}
+</script>
diff --git a/templates/scripts/autocomplete.hbs b/templates/scripts/autocomplete.hbs
new file mode 100644
index 00000000..82d5b4b5
--- /dev/null
+++ b/templates/scripts/autocomplete.hbs
@@ -0,0 +1,5 @@
+<script>
+var proposals = [ {{#each proposals as |val|}}"{{val}}",{{/each}} ];
+Array.from(document.getElementsByClassName('{{className}}'))
+  .forEach(element => autocomplete(element, proposals))
+</script>