diff --git a/common/src/main/java/com/dtteam/dynamictrees/deserialization/JsonMath.java b/common/src/main/java/com/dtteam/dynamictrees/deserialization/JsonMath.java
index 5adcdcb53..d2d70d824 100644
--- a/common/src/main/java/com/dtteam/dynamictrees/deserialization/JsonMath.java
+++ b/common/src/main/java/com/dtteam/dynamictrees/deserialization/JsonMath.java
@@ -1,6 +1,7 @@
 package com.dtteam.dynamictrees.deserialization;
 
 import com.dtteam.dynamictrees.tree.species.Species;
+import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import net.minecraft.util.RandomSource;
@@ -8,6 +9,7 @@
 import org.jetbrains.annotations.Nullable;
 
 import java.util.ArrayList;
+import java.util.List;
 import java.util.Locale;
 import java.util.Map.Entry;
 
@@ -41,6 +43,24 @@ private MathOperator getVariable(String name) {
         return NULL_OPERATOR;
     }
 
+    /**
+     * Attempt to parse each entry in a JsonArray, assuming each is intended to be a Species.
+     * Because a species entry is assumed to be a String, non-string entries are skipped.
+     * @param speciesArray JsonArray containing string entries to parse into Species instances.
+     * @return An array of valid Species, or an empty array if none are valid.
+     */
+    private Species[] tryGetSpeciesList(JsonArray speciesArray) {
+        List<Species> validSpecies = new ArrayList<>();
+        for (JsonElement listElement : speciesArray) {
+            if (listElement.isJsonPrimitive() && listElement.getAsJsonPrimitive().isString()) {
+                if (Species.findSpeciesSloppy(listElement.getAsJsonPrimitive().getAsString()) != Species.NULL_SPECIES) {
+                    validSpecies.add(Species.findSpeciesSloppy(listElement.getAsJsonPrimitive().getAsString()));
+                }
+            }
+        }
+        return validSpecies.toArray(new Species[0]);
+    }
+
     private MathOperator processElement(String key, JsonElement value) {
 
         MathFunction op = MathFunction.getFunction(key);
@@ -50,13 +70,16 @@ private MathOperator processElement(String key, JsonElement value) {
 		}
 
         ArrayList<MathOperator> paramList = new ArrayList<>();
+        Species[] speciesList = null;
         Species speciesArg = Species.NULL_SPECIES;
 
         //If the value is an array then these are the parameters for this operation
         if (value.isJsonArray()) {
             for (JsonElement parameter : value.getAsJsonArray()) {
                 MathOperator m = NULL_OPERATOR;
-                if (parameter.isJsonObject()) {
+                if (parameter.isJsonArray()) {
+                    speciesList = tryGetSpeciesList(parameter.getAsJsonArray());
+                } else if (parameter.isJsonObject()) {
                     Entry<String, JsonElement> entry = parameter.getAsJsonObject().entrySet().iterator().next();
                     m = processElement(entry.getKey(), entry.getValue());
                 } else if (parameter.isJsonPrimitive()) {
@@ -93,7 +116,14 @@ private MathOperator processElement(String key, JsonElement value) {
             case MAX -> new Maximum(paramArray);
             case MIN -> new Minimum(paramArray);
             case IFGT -> new IfGreaterThan(paramArray);
-            case SPECIES -> speciesArg != Species.NULL_SPECIES ? new IfSpecies(speciesArg, paramArray) : null;
+            case SPECIES -> {
+                if (speciesArg != Species.NULL_SPECIES) {
+                    yield new IfSpecies(speciesArg, paramArray);
+                } else if (speciesList != null && speciesList.length > 0) {
+                    yield new IfSpecies(speciesList, paramArray);
+                }
+                yield NULL_OPERATOR;
+            }
             case DEBUG -> new Debug(paramArray);
             default -> NULL_OPERATOR;
         };
@@ -386,10 +416,15 @@ public float apply(MathContext mc) {
     public static class IfSpecies implements MathOperator {
 
         private final MathOperator[] functions;
-        private final Species species;
+        private final Species[] speciesList;
 
         public IfSpecies(Species species, MathOperator[] functionArray) {
-            this.species = species;
+            this.speciesList = new Species[] {species};
+            this.functions = functionArray;
+        }
+
+        public IfSpecies(Species[] speciesList, MathOperator[] functionArray) {
+            this.speciesList = speciesList;
             this.functions = functionArray;
         }
 
@@ -397,7 +432,12 @@ public IfSpecies(Species species, MathOperator[] functionArray) {
         public float apply(MathContext mc) {
 
             if (mc instanceof MathSpeciesContext && functions.length == 2) {
-                return ((MathSpeciesContext) mc).species == species ? functions[0].apply(mc) : functions[1].apply(mc);
+                for (Species species : speciesList) {
+                    if (((MathSpeciesContext) mc).species == species) {
+                        return functions[0].apply(mc);
+                    }
+                }
+                return functions[1].apply(mc);
             }
 
             return 0.0f;
diff --git a/gradle.properties b/gradle.properties
index 52b10b672..eb8d0007d 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,7 +9,7 @@ credits=Current developer: MaxHyper. Development of treepacks: Harley O'Connor.
 license=MIT
 description=Trees that grow, forests that spread...
 group=com.dtteam.dynamictrees
-mod_version=1.7.1
+mod_version=1.7.2
 fabricVersionAppend=-BETA
 neoVersionAppend=
 versionType=stable