diff --git a/lib/Biodiverse/GUI/Dendrogram.pm b/lib/Biodiverse/GUI/Dendrogram.pm
index 85040e5d5..7ceb3c74e 100644
--- a/lib/Biodiverse/GUI/Dendrogram.pm
+++ b/lib/Biodiverse/GUI/Dendrogram.pm
@@ -542,7 +542,8 @@ sub get_palette {
         # ed: actually don't - adjacent clusters may get wildly different hues
         # because the hashes are randomly sorted...
         #my $hue_slice = 180 / $num_clusters;
-        @colourset = (DEFAULT_LINE_COLOUR_RGB) x $num_clusters;  #  saves looping over them all
+        @colourset = (DEFAULT_LINE_COLOUR_RGB) x $num_clusters;
+        #  saves looping over them all
     }
 
     my @colours = @colourset[0 .. $num_clusters - 1]; #  return the relevant slice
@@ -661,7 +662,8 @@ sub do_colour_nodes_below {
         @colour_nodes = values %node_hash;
         #print "[Dendrogram] Done Grouping...\n";
 
-        # FIXME: why loop instead of just grouping with num_clusters => $self->get_palette_max_colours
+        # FIXME: why loop instead of just grouping with
+        # num_clusters => $self->get_palette_max_colours
         #  make sure we don't exceed the maximum number of colours
         while (scalar @colour_nodes > $self->get_palette_max_colours) {  
             $excess_flag = 1;
diff --git a/lib/Biodiverse/TreeNode.pm b/lib/Biodiverse/TreeNode.pm
index c5365b2cf..bb3b046e7 100644
--- a/lib/Biodiverse/TreeNode.pm
+++ b/lib/Biodiverse/TreeNode.pm
@@ -168,6 +168,10 @@ sub get_name {
       // croak "name parameter missing or undefined\n";
 }
 
+sub get_node_values {
+    wantarray ? %{$_[0]->{NODE_VALUES}} : $_[0]->{NODE_VALUES};
+}
+
 sub set_length {
     my $self = shift;
     my %args = @_;
@@ -1494,6 +1498,19 @@ sub assign_plot_coords_inner {
     return;    
 }
 
+sub get_terminal_node_first_number {
+    my $self = shift;
+    no autovivification;
+    my $values = $self->get_node_values;
+    return $values->{TERMINAL_NODE_FIRST};
+}
+
+sub get_terminal_node_last_number {
+    my $self = shift;
+    no autovivification;
+    my $values = $self->get_node_values;
+    return $values->{TERMINAL_NODE_LAST};
+}
 
 #  number the nodes below this one based on the terminal nodes
 #  this allows us to export to CSV and retain some of the topology