Define Platystemon: a genus of small annual herbs (family Papaveraceae) of the southwestern U.S. with linear leaves and creamy to pale yellow flowers.
Platystemon arizonicus Greene; P. australis Greene; P. californicus var. ciliatus Dunkle; P. californicus var. crinitus Greene; P. californicus var. horridulus.
A detailed description for Platystemon californicus, Creamcups;. Rather than naming each ecotype, it seems best to treat Platystemon as a single, highly variable species with many locally adapted, intergrading populations. State GSAT Lists NRCS. Flowering Platystemon March to May in Arizona, California and Texas. Note: usually more erect than one pictured. Platystemon page Contents Tournefortia obtusiflora content Current events Random article Donate to Wikipedia Wikipedia store. Search ntclibyaus.org Flora of North America.