I want to actively support Jane's request. Last year I had some correspondence with Chris Pires at the Univ. of Wisconsin-Madison who has been doing DNA analysis of the Brodiaeas and related species. He uses cladograms to organize it and related genera phylogenetically. He was very patient in trying to explain things to me, but I found it challenging to understand and know I would very much appreciate the kind of article Jane is talking about. ------- Georgie