+ public PhylogenyNode( final String node_name ) {
+ setId( PhylogenyNode.getNodeCount() );
+ PhylogenyNode.increaseNodeCount();
+ setSumExtNodes( 1 ); // For ext node, this number is 1 (not 0!!)
+ if ( node_name != null ) {
+ getNodeData().setNodeName( node_name );
+ }
+ }
+