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Epilobium rigidum
Also called Siskiyou Mountains Willowherb
Epilobium rigidum is an uncommon species of flowering plant in the evening primrose family known by the common names stiff willowherb and Siskiyou Mountains willowherb.
It is endemic to the Klamath Mountains of far northern California and southern Oregon, where it grows in dry, open areas in lower elevation coniferous forest habitat, often on serpentine soils.
Whorled Leaved Willowherb · Chickweed Willowherb · Pimpernel willowherb · Aboriginal willowherb · Tall annual willowherb · New Zealand Willowherb · Hummingbird trumpet · Fringed willowherb · Talus willowherb · Selfing willowherb · Hill Willowherb · Purpleleaf willowherb
Text excerpted from the Wikipedia article Epilobium rigidum by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
