Evolution of geophytes?

rrodich@juno.com rrodich@juno.com
Fri, 08 Feb 2019 21:50:25 PST

Not that I would know, but with the talk about grazing pressure evolution
of subterranean crocus ovaries, I have a question:
Is this merely an adaption that humans assume is true, or is there
evidence to back it up?  For instance, are there (or were there) crocus
species that do not do this?   And would this also be the reason for the 
similar adaptation of taxonomically unrelated Colchicum?
 Has anyone investigated the possibility that the reason might be to
escape extreme cold during a critical time of fertilization or seed
development?  At least in Liliaceae, temperature can be demanding for
good fertilization in some genera.

Rick Rodich
just west of Minneapolis, MN

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