|Ute ladies'-tresses, Ute lady's tresses|
|Lucy Jordan and Sylvia Torti|
The following Participating Institutions are custodians for this species in the CPC National Collection:
Red Butte Garden and Arboretum
Cincinnati Zoo & Botanical Garden
The conservation of Spiranthes diluvialis is fully sponsored.
Lucy Jordan and Sylvia Torti contributed to this Plant Profile.
A beautiful perennial, terrestrial orchid with cream colored flowers. The orchid grow in moist soils on primary or secondary flood plains of rivers or wet, open meadows and springs. This species is known from populations in Colorado, Idaho, Montana, Nebraska, Nevada, Utah, Washington, and Wyoming.
Distribution & Occurrence
Silty loam alluvial soils associated with wetlands or floodplains of perennial streams in intermontane valleys.
|Approximately 60,000 individuals, generally distributed as localized clusters of small colonies (10 50 individuals). There are large populations (several thousand individuals) in three states.|
Conservation, Ecology & Research
Modification of hydrology of occupied or potentially suitable habitat
Grazing each year during the flowering period
Pollinators and their habitat must be protected to insure adequate reproduction
Tepedino is studying the reproductive biology of this species (Tepedino 2002; Tepedino and Sipes 2000)
McGonigle is studying the root associated fungi of this species (McGonigle and Sheridan 2004)
Protect watershed areas to insure key orchid habitat.
Restore natural fluvial processes and stream channel complexity to ensure formation and maintenance of occupied and suitable habitat.
Control invasive plant species in occupied and suitable habitat.
Understand and manage for suitable pollinator habitat.
Arft, A.M.; Ranker, T.A. Abstract: Ecology of the rare orchid Spiranthes diluvialis: Implications for conservation. University of Colorado, Boulder, CO; Department of EPO Biology and University Museum,.
Heidel, B.L. Abstract for discussion: Wetland habitat of the Threatened Plant, Spiranthes diluvialis in Montana. Proceedings: Conserving Montana's Rare Plants and Special Habitats; Missoula, MT. 1997.
O'Kane, S.L. 1988. Colorado's rare flora. Great Basin Naturalist. 48, 4: 434-484.
Pierson, K.; Tepedino, V.J.; Sipes, S.; Kuta, K. Pollination Ecology of the Rare Orchid, Spiranthes diluvialis; Implications for Conservation. Southwestern rare and endangered plants: proceedings of the third conference; September 25-28; Flagstaff, AZ. In
Theobald, W.L.; Tseng, C.S.; Mathias, M.E. 1964. A revision of Aletes and Neoparrya (Umbelliferae). Brittonia. 16: 296-315.