Spiranthes diluvialis Sheviak
Ute lady's tresses
Orchidaceae (Orchid family)
Introduction to Vascular Plants
Ute lady's tresses
Orchidaceae (Orchid family)
Introduction to Vascular Plants
Introduction
There are two species of ladies' tresses in British Columbia: hooded ladies' tresses (Spiranthes romanzoffiana) and Ute ladies' tresses (S. diluvialis). Ute ladies' tresses is a recent addition to the flora of British Columbia and Canada. It was first reported for the province by Curtis Bjork and Terry McIntosh on the east shore of Lake Osoyoos in 2008. It had been found previously by O. and G. Westby at Mahoney Lake in 2006, but not recognized at the time as a distinct species. Along Osoyoos Lake, it grows in association with Carex viridula Michx. and/or Eleocharis rostellata (Torr.) Torr. (Bjork et al. 2008). It is also found within a band of grasses and sedges along Mahoney Lake.
Note Authors: T. McIntosh and R. Klinkenberg. |
Status Information
| Origin Status | Provincial Status | BC List (Red Blue List) | COSEWIC |
|---|---|---|---|
| Native | S1 | Red | E (Dec 2018) |
BC Ministry of Environment: BC Species and Ecosystems Explorer.
Synonyms
Synonyms and Alternate Names:
Spiranthes romanzoffiana var. diluvialis (Sheviak) S.L. Welsh
Similar Species
Spiranthes diluvialis is most similar to Spiranthes romanzoffiana. It may be distinguished by "its longer and denser hairs in the inflorescence, and its lack of a distinctly flared distal portion of the lip (Sheviak & Brown 2002)" (Bjork et al. 2008). Unlike Spiranthes romanzoffiana, it grows in diverse habitats. However it shows preference for calcareous or moderately saline, seasonally wet soils: it is not found in bogs or fens (Bjork et al. 2008)
Note Authors: T. McIntosh and R. Klinkenberg. |
References
Bjork, Curtis, Terry McIntosh and Ron Hall. 2008. Vascular plants new to British Columbia from the southern Okanagan Valley. Botanical Electronic News 391.