(species Platystemon californicus), annual plant of the poppy family (Papaveraceae) native to western North America. The 30-centimetre- (1-foot-) tall, hairy plant bears 2.5-centimetre (1-inch) cream or pale yellow blooms singly on long stems. Six petals surround a prominent central puff of long, thick stamens (male reproductive structures). Creamcups grow with grasses in open ground and flower from March to May.
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