Calla was at one time the legitimate botanical name of what we now call Zantedeschia. =================== Hi Gang, Z. aethiopica has had three other names that I can find: Calla aethiopica, Richardia aetiopica, and Colocasia aethiopica. No doubt the latter name was coined with a very broad concept of the geneus Colocasia in mind. Jim M. hit the nail on the head when he pointed out that "legitimate" botanical names can change. I think all four names (above) were validly published, in the sense that "valid" names are those published according to the rules of the ICBN. LINK: Botanical Nomenlature, Valid Names (Wikipedia) http://en.wikipedia.org/wiki/Valid_name_(botany)/ The nice thing about names becoming standardized (i.e., legitimate) is that such case usually means a clear understanding of a genus has developed. It is when we don't quite underrstand all the biology that Nature is tossing at us that names can keep changing. Smart folks (such as members of this email list) help by growing and studying plants, and by reporting on them. Cordially, Joe Conroe TX Cool tonight, the last Crinum americanum scape of the season was taken out by a frost a few days ago.