what is the opposite of contractile?

P. C. Andrews pcamusa@hotmail.com
Sat, 22 Sep 2007 15:28:10 PDT

> 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.


Phil Andrews

Can you find the hidden words?  Take a break and play Seekadoo!

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