diff --git a/backend/geonature/core/gn_synthese/utils/query_select_sqla.py b/backend/geonature/core/gn_synthese/utils/query_select_sqla.py
index 7ecf1f5267..7f970845a2 100644
--- a/backend/geonature/core/gn_synthese/utils/query_select_sqla.py
+++ b/backend/geonature/core/gn_synthese/utils/query_select_sqla.py
@@ -255,12 +255,6 @@ def filter_taxonomy(self):
         if len(cd_ref_childs) > 0:
             self.add_join(Taxref, Taxref.cd_nom, self.model.cd_nom)
             self.query = self.query.where(Taxref.cd_ref.in_(cd_ref_childs))
-        if "taxonomy_group2_inpn" in self.filters:
-            self.add_join(Taxref, Taxref.cd_nom, self.model.cd_nom)
-            self.query = self.query.where(
-                Taxref.group2_inpn.in_(self.filters.pop("taxonomy_group2_inpn"))
-            )
-
         if "taxonomy_id_hab" in self.filters:
             self.add_join(Taxref, Taxref.cd_nom, self.model.cd_nom)
             self.query = self.query.where(
@@ -272,6 +266,13 @@ def filter_taxonomy(self):
         red_list_filters = {}
 
         for colname, value in self.filters.items():
+            if colname.startswith("taxonomy_group"):
+                # colname = group type (group2 or group3 inpn)
+                # value = list of group values
+                colname = colname.split("taxonomy_")[-1]
+                self.add_join(Taxref, Taxref.cd_nom, self.model.cd_nom)
+                self.query = self.query.where(getattr(Taxref, colname).in_(value))
+
             if colname.startswith("taxhub_attribut"):
                 self.add_join(Taxref, Taxref.cd_nom, self.model.cd_nom)
                 taxhub_id_attr = colname[16:]
diff --git a/backend/geonature/tests/test_synthese.py b/backend/geonature/tests/test_synthese.py
index a0e0607e98..0e052a23d1 100644
--- a/backend/geonature/tests/test_synthese.py
+++ b/backend/geonature/tests/test_synthese.py
@@ -484,33 +484,29 @@ def test_filter_cor_observers(self, users, synthese_data):
         assert response.status_code == 200
 
     @pytest.mark.parametrize(
-        "additionnal_column",
-        [("altitude_min"), ("count_min_max"), ("nom_vern_or_lb_nom")],
+        "group_inpn",
+        [
+            ("group2_inpn"),
+            ("group3_inpn"),
+        ],
     )
-    def test_get_observations_for_web_param_column_frontend(
-        self, app, users, synthese_data, additionnal_column
-    ):
-        """
-        Test de renseigner le paramètre LIST_COLUMNS_FRONTEND pour renvoyer uniquement
-        les colonnes souhaitées
-        """
-        app.config["SYNTHESE"]["LIST_COLUMNS_FRONTEND"] = [
-            {
-                "prop": additionnal_column,
-                "name": "My label",
-            }
-        ]
+    def test_get_observations_for_web_filter_group_inpn(self, users, synthese_data, group_inpn):
+        obs = synthese_data["obs1"]
+        taxref_from_cd_nom = Taxref.query.filter_by(cd_nom=obs.cd_nom).one()
+        group_from_taxref = getattr(taxref_from_cd_nom, group_inpn)
+        filter_name = "taxonomie_" + group_inpn
 
         set_logged_user(self.client, users["self_user"])
-
-        response = self.client.get(url_for("gn_synthese.get_observations_for_web"))
-        data = response.get_json()
-
-        expected_columns = {"id", "url_source", additionnal_column}
-
-        assert all(
-            set(feature["properties"].keys()) == expected_columns for feature in data["features"]
+        response = self.client.get(
+            url_for("gn_synthese.get_observations_for_web"),
+            json={
+                filter_name: [group_from_taxref],
+            },
         )
+        response_json = response.json
+        assert obs.id_synthese in {
+            synthese["properties"]["id"] for synthese in response_json["features"]
+        }
 
     def test_export(self, users):
         set_logged_user(self.client, users["self_user"])
@@ -736,6 +732,7 @@ def test_export_taxons(self, users, synthese_data, synthese_sensitive_data):
             '"nom_vern"',
             '"group1_inpn"',
             '"group2_inpn"',
+            '"group3_inpn"',
             '"regne"',
             '"phylum"',
             '"classe"',
@@ -761,7 +758,7 @@ def assert_export_taxons_results(user, set_expected_cd_ref):
             rows_data_response = response.data.decode("utf-8").split("\r\n")[0:-1]
             row_header = rows_data_response[0]
             rows_taxons_data_response = rows_data_response[1:]
-
+            print(row_header.split(";"), expected_columns_exports)
             assert row_header.split(";") == expected_columns_exports
 
             nb_expected_cd_noms = len(set_expected_cd_ref)
diff --git a/frontend/src/app/GN2CommonModule/form/data-form.service.ts b/frontend/src/app/GN2CommonModule/form/data-form.service.ts
index fc305bccef..b8c269b651 100644
--- a/frontend/src/app/GN2CommonModule/form/data-form.service.ts
+++ b/frontend/src/app/GN2CommonModule/form/data-form.service.ts
@@ -227,6 +227,10 @@ export class DataFormService {
     return this._http.get<any>(`${this.config.API_TAXHUB}/taxref/regnewithgroupe2`);
   }
 
+  getGroup3Inpn() {
+    return this._http.get<any>(`${this.config.API_TAXHUB}/taxref/groupe3_inpn`);
+  }
+
   getTaxhubBibAttributes() {
     return this._http.get<any>(`${this.config.API_TAXHUB}/bibattributs/`);
   }
diff --git a/frontend/src/app/GN2CommonModule/form/synthese-form/advanced-form/synthese-advanced-form-store.service.ts b/frontend/src/app/GN2CommonModule/form/synthese-form/advanced-form/synthese-advanced-form-store.service.ts
index 5769d2fe81..a5ed63fcdb 100644
--- a/frontend/src/app/GN2CommonModule/form/synthese-form/advanced-form/synthese-advanced-form-store.service.ts
+++ b/frontend/src/app/GN2CommonModule/form/synthese-form/advanced-form/synthese-advanced-form-store.service.ts
@@ -19,6 +19,7 @@ export class TaxonAdvancedStoreService {
   public formBuilded: boolean;
   public taxonomyHab: Array<any>;
   public taxonomyGroup2Inpn: Array<any>;
+  public taxonomyGroup3Inpn: Array<any>;
   public redListsValues: any = {};
 
   constructor(
@@ -88,5 +89,9 @@ export class TaxonAdvancedStoreService {
       }
       this.taxonomyGroup2Inpn = all_groups;
     });
+
+    this._dataService.getGroup3Inpn().subscribe((data) => {
+      this.taxonomyGroup3Inpn = data.map((item) => ({ value: item }));
+    });
   }
 }
diff --git a/frontend/src/app/GN2CommonModule/form/synthese-form/advanced-form/synthese-advanced-form.component.html b/frontend/src/app/GN2CommonModule/form/synthese-form/advanced-form/synthese-advanced-form.component.html
index 857f6ef23e..a32c1d18df 100644
--- a/frontend/src/app/GN2CommonModule/form/synthese-form/advanced-form/synthese-advanced-form.component.html
+++ b/frontend/src/app/GN2CommonModule/form/synthese-form/advanced-form/synthese-advanced-form.component.html
@@ -164,6 +164,18 @@ <h5>Attributs TaxRef</h5>
         >
         </pnx-multiselect>
       </div>
+      <div class="form-group">
+        <pnx-multiselect
+          [values]="storeService.taxonomyGroup3Inpn"
+          [parentFormControl]="formService.searchForm.controls.taxonomy_group3_inpn"
+          keyLabel="value"
+          keyValue="value"
+          label="Groupe 3 INPN"
+          (onChange)="onTaxRefAttributsSelected($event.value)"
+          (onDelete)="onTaxRefAttributsDeleted($event.value.value)"
+        >
+        </pnx-multiselect>
+      </div>
     </div>
 
     <div *ngIf="storeService.formBuilded && storeService.taxhubAttributes.length > 0">
diff --git a/frontend/src/app/GN2CommonModule/form/synthese-form/synthese-form.service.ts b/frontend/src/app/GN2CommonModule/form/synthese-form/synthese-form.service.ts
index 4c4591341b..4635b6b128 100644
--- a/frontend/src/app/GN2CommonModule/form/synthese-form/synthese-form.service.ts
+++ b/frontend/src/app/GN2CommonModule/form/synthese-form/synthese-form.service.ts
@@ -88,6 +88,7 @@ export class SyntheseFormService {
       taxonomy_lr: null,
       taxonomy_id_hab: null,
       taxonomy_group2_inpn: null,
+      taxonomy_group3_inpn: null,
       taxon_rank: null,
     });