Perityle emoryi Asteraceae

It is likely sigifificant that L. glaberrima is self-compatible, whereas most other species of Lasthenia are self-incompatible. Long-distance dispersal of a single propagule of L. glaberrima would then have been sufficient to establish the species in Chile. It is, of course, entirely possible that propagules from one or another of the self-incompatible species could also have made the journey, but without a reproduc-tively compatible partner their fates were sealed. 

Perityle is a genus consisting of ca. 63 species distributed primarily in western North America and Mexico, with one species in Chile and Peru (Karis and Ryding, 1994). The species of interest is P. emoryi Torr., an annual, polyploid, weedy species that 

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