Spiranthes porrifolia is a species of orchid known by the common names creamy lady's tresses[1] and western ladies' tresses. It is native to the western United States from Washington and Idaho to southern California.[2] It can be found in moist habitats, such as mountain meadows, swamps, fens, and riverbanks.[2] It is a perennial herb growing from a tuberous root system, reaching a maximum height around 60 cm (24 in).[2] The leaves are mainly located around the base of the erect stem. They are linear or lance-shaped, or sometimes nearly oval. The top of the stem is occupied by the inflorescence, a dense spiral of many flowers. Each flower is somewhat tubular, with an upper and lower lip, and cream to yellowish in color.[2]
| Spiranthes porrifolia | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Cranichideae |
| Genus: | Spiranthes |
| Species: | S. porrifolia
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| Binomial name | |
| Spiranthes porrifolia | |
The specific epithet porrifolia is Latin for "leek-leaved".[citation needed]
References
edit- ^ USDA, NRCS (n.d.). "Spiranthes porrifolia". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 27 November 2015.
- ^ a b c d Sheviak, Charles J.; Brown, Paul Martin (2002). "Spiranthes porrifolia". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 26. New York and Oxford: Oxford University Press. Retrieved 2018-11-09 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.