Biology:Spiranthes perexilis
| languid ladies’-tresses | |
|---|---|
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| Inflorescence | |
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. perexilis
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| Binomial name | |
| Spiranthes perexilis (Sheviak) M.C.Pace
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Spiranthes perexilis, the languid ladies’-tresses, is a species of orchid native to California and Oregon.[1]
Description
Spiranthes perexilis plants are closely related to Spiranthes romanzoffiana and similar in appearance, but "gracile and open-spiralled, with narrow subpandurate labella". Spiranthes porrifolia plants also look similar.[2]
Distribution and habitat
Spiranthes perexilis has been found in California and Oregon.[2][3]
It grows in fens and wet meadows, often along the edge of the fen area and the slightly higher area around it. Within the Sierra Nevada and the Cascade Range it grows in similar habitat to Spiranthes porrifolia and Spiranthes romanzoffiana.[2]
Taxonomy
Spiranthes perexilis plants were first described by Paul Martin Brown in 2008 as Spiranthes stellata but apparently contained a mix of species in the holotype sheet used to describe the new species. C. J. Sheviak first described the plants now accepted as Spiranthes perexilis as a subspecies called Spiranthes stellata subsp. perexilis in 2012 and M. C. Pace elevated them to species status in 2019.[2][4]
References
- ↑ Brown, Paul Martin (15 July 2020). "Additions and corrections to the Wild Orchids of North America, North of Mexico. II". Journal of the Botanical Research Institute of Texas 14 (1): 13–26. doi:10.17348/jbrit.v14.i1.893.
- ↑ 2.0 2.1 2.2 2.3 Pace, Matthew C.; Cameron, Kenneth M. (April 2019). "The evolutionary and systematic significance of hybridization between taxa of Spiranthes (Orchidaceae) in the California Sierra Nevada and Cascade Range". Taxon 68 (2): 199–207. doi:10.1002/tax.12034.
- ↑ Template:Gbif
- ↑ Template:Ipni
Wikidata ☰ Q89063253 entry
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