Index: wp-admin/includes/theme.php
===================================================================
--- wp-admin/includes/theme.php	(revision 8753)
+++ wp-admin/includes/theme.php	(working copy)
@@ -44,6 +44,15 @@
 				$description = $description[1];
 
 			if ( !empty( $name ) ) {
+				if ( STYLESHEETPATH != TEMPLATEPATH ) {
+					if ( $themes[$theme]['Template Dir'] == dirname($template) )
+						$suffix = $themes[$theme]['Parent Theme'];
+					elseif ( $themes[$theme]['Stylesheet Dir'] == dirname($template) )
+						$suffix = $themes[$theme]['Name'];
+
+					$name = sprintf(__('%1$s (%2$s)'), $name, $suffix);
+				}
+				
 				$page_templates[trim( $name )] = basename( $template );
 			}
 		}