Spiranthes porrifolia

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
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Cranichideae
Subtribe: Spiranthinae
Genus: Spiranthes
Species:
S. porrifolia
Binomial name
Spiranthes porrifolia

The specific epithet porrifolia is Latin for "leek-leaved."

References
  1. "Spiranthes porrifolia". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 27 November 2015.
  2. 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). 26. New York and Oxford. Retrieved 2018-11-09 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
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