Pseudotrillium
| Brook wakerobin | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Liliales |
| Family: | Melanthiaceae |
| Tribe: | Parideae |
| Genus: | Pseudotrillium S.B.Farmer |
| Species: | P. rivale
|
| Binomial name | |
| Pseudotrillium rivale (S.Wats.) S. B. Farmer, 2002
| |
| Synonyms[1] | |
|
Trillium rivale S.Wats. | |
Pseudotrillium is a proposed monotypic genus of flowering plants containing the single species Pseudotrillium rivale, which is known by the common name brook wakerobin.[2] The genus was proposed in 2002 on the basis of morphology and molecular evidence that suggest the plant should no longer be included in genus Trillium.[3]
This species is endemic to the Siskiyou Mountains of southern Oregon (Josephine, Coos, Douglas, + Curry counties) and northern California (Siskiyou + Del Norte counties), usually on soils of ultramafic origin, such as serpentine.[1][4][5]
Pseudotrillium rivale is a rhizomatous perennial growing up to 20 centimetres (8 in) in height. The three bracts have generally lance-shaped blades up to 11 centimetres (4+1⁄3 in) long borne on petioles. The blades are glossy blue-green with silvery venations. Atop the whorl of bracts is a single nodding non-fragrant flower with green sepals and pink-blushed white petals up to 3 centimetres (1+1⁄4 in) long by 2 centimetres (4⁄5 in) wide.[6]
This plant has gained the Royal Horticultural Society's Award of Garden Merit.[7]
References
- ^ a b Kew World Checklist of Selected Plant Families
- ^ USDA, NRCS (n.d.). "Trillium rivale". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 15 December 2015.
- ^ Farmer, S. B. and E. E. Schilling. (2002). Phylogenetic analyses of Trilliaceae based on mophological and molecular data. Systematic Botany 27:4 674-92.
- ^ Biota of North America Program 2013 county distribution map
- ^ Calflora taxon report, University of California @ Berkeley, Pseudotrillium rivale (S. Watson) S. Farmer Siskiyou wakerobin
- ^ Jepson Manual Treatment: Trillium rivale
- ^ Royal Horticultural Society, Trillium rivale, brook wakerobin
External links
- Flora of North America: Trillium rivale
- Calphotos Photo gallery, University of California: Trillium rivale
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