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Pseudotrillium
Pseudotrillium is a genus with one species, Pseudotrillium rivale (brook wakerobin), a small woodland perennial from a rhizome that looks like a trillium. It is grown in shady, moist, sheltered gardens, with the main species being the commonly grown member.
Pseudotrillium is a monotypic genus in the bunchflower family Melanthiaceae. Its sole species, the flowering plant Pseudotrillium rivale, is commonly known as the brook wakerobin. It is endemic to the Siskiyou Mountains of southern Oregon and northern California. The Latin specific epithet rivale means "growing by streams", a reference to a preferred habitat.
Pseudotrillium rivale is endemic to the Siskiyou Mountains of southern Oregon (Josephine, Coos, Douglas, and Curry counties) and northern California (Siskiyou and Del Norte counties), usually on soils of ultramafic origin, such as serpentine. California plants, growing in a dense damp woods, are larger than Oregon plants in all respects with a strong tendency to produce colored flowers. In contrast, Oregon plants found in dry open woods are tiny plants with freckled white flowers.
Under its former name, Trillium rivale, this plant has gained the Royal Horticultural Society's Award of Garden Merit. Hardy down to −10 °C (14 °F), it requires a sheltered position in partial or full shade.
Text excerpted from the Wikipedia article Pseudotrillium by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
