Family = Cactaceae, Genus = Opuntia, Species = polyacantha, including synonyms,
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(= Opuntia polyacantha in Flora of the Pacific Northwest)
Fleshy perennials, forming rounded clumps 1-3 dm. tall, often spreading into mats several meters broad; stems jointed, the sections strongly flattened, obovate to sub-obicular in outline, 5-15 cm. long.
Distribution: Occurring east of the Cascades in Washington; southern British Columbia south to eastern Oregon.
Habitat: Plains and foothills to the lower mountains.
