> Possibly bulbs that "push" themselves out of the soil evolved in situations > of highly mobile soils, such as dunes or repeatedly flooded zones, and this > strategy keeps the bulb at an optimal level where it will not be buried too > deeply and have to expend too much stored energy extending its leaves and > scape to the increasingly distant surface. I have a couple of interesting photos that nicely illustrate the adaptation of Hymenocallis to growing on dunes. I can't post to the PBS wiki yet but would be glad to send copies to anyone interested. Regards, Phil Andrews _________________________________________________________________ Can you find the hidden words? Take a break and play Seekadoo! http://club.live.com/seekadoo.aspx/…