Evolution of geophytes?

Monica Swartz eciton@utexas.edu
Fri, 08 Feb 2019 07:59:52 PST
Another important factor for geophyte evolution are adaptations to 
exploit expansive/contractive clay soils. The root destructive 
characteristics of these soils excludes competitors for geophytes 
with seasonal roots. Places with these clays can be "islands" of 
geophyte endemism, i.e. the "Willow soils" of Riverside Co. 
California.
monica
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