Dennis, it seems like you just have to buy the book. I just did. A great group of plants! I grow a very few Aquilegia and Semiaquilegia ecalcarata. They are a nightmare to keep pure.Even A.chyrsantha which flowers later than vulgaris eventually produced hybrid offspring. I have sown my entire woodland with garden origin Aquilegia vulgaris that I had spent 20 years rogueing to get as close to the species as possible.They still produce some pinks and whites in different shapes all these years later. I try now to keep just the pure whites in the garden itself. And now rogue out the worst "offenders" in the woods. Mark. 1924 route de la mer, 76119 Sainte Marguerite-sur-mer, France. _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/