Index: /trunk/data/defaultpresets.xml
===================================================================
--- /trunk/data/defaultpresets.xml	(revision 12324)
+++ /trunk/data/defaultpresets.xml	(revision 12325)
@@ -240,4 +240,9 @@
         <text key="description" text="Description"/>
     </chunk>
+    <chunk id="genus_species_taxon">
+        <text key="genus" text="Genus" />
+        <text key="species" text="Species" />
+        <text key="taxon" text="Taxon" />
+    </chunk>
     <chunk id="leaf">
         <combo key="leaf_type" text="Type" values="broadleaved,needleleaved,mixed,leafless" values_searchable="true" />
@@ -1747,7 +1752,5 @@
             <optional>
                 <text key="height" text="Height (meters)" length="7" />
-                <text key="genus" text="Genus" />
-                <text key="species" text="Species" />
-                <text key="taxon" text="Taxon" />
+                <reference ref="genus_species_taxon" />
                 <reference ref="leaf" />
             </optional>
@@ -10133,7 +10136,5 @@
             <text key="name" text="Name" />
             <text key="height" text="Height (meters)" />
-            <text key="genus" text="Genus" />
-            <text key="species" text="Species" />
-            <text key="taxon" text="Taxon" />
+            <reference ref="genus_species_taxon" />
             <reference ref="leaf" />
         </item> <!-- Tree -->
@@ -10154,4 +10155,5 @@
             <text key="height" text="Height (meters)" />
             <optional>
+                <reference ref="genus_species_taxon" />
                 <reference ref="leaf" />
             </optional>
@@ -10469,6 +10471,5 @@
             <text key="name" text="Name" />
             <text key="operator" text="Operator" />
-            <text key="genus" text="Genus" />
-            <text key="species" text="Species" />
+            <reference ref="genus_species_taxon" />
         </item> <!-- Plant Nursery -->
         <item name="Aquaculture" icon="presets/landuse/aquaculture.svg" type="closedway,multipolygon" preset_name_label="true">