Pseudotrillium
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| Pseudotrillium rivale | ||||||||||||||
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| Pseudotrillium rivale (S.Wats.) S. B. Farmer |
Pseudotrillium rivale is a species of the Trilliaceae family. It is the only species in the genus Pseudotrillium. P. rivale occurs in the Siskiyou Mountains of Oregon and California, often on soils of ultramafic origin. This spring-flowering herb grows 4-15 cm tall; its single flower has purple spots on its three petals, which are otherwise white.
