diversity about equally divided between Eurasia and N. America (w. Canada to Costa Rica); in our area, mostly sw. US (the wast majority restricted to CA), with 3 spp. more widely western, ranging into ND-IA-MO-AR(1)
Contributed by Martin Hauser on 27 March, 2006 - 11:14am Additional contributions by v belov Last updated 11 March, 2015 - 12:37pm
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