Ute ladies'-tresses (Spiranthes diluvialis) Conservation Status Review
Review Date = 06/11/2012
Score2 - Small: Generally 2,000-10,000 individuals.
Score2 - Regional or State Endemic or Small Montana Range: Generally restricted to an area <100,000 sq. miles (equivalent to 2/3 the size of Montana or less) or Montana contributes 50% or more of the species’ range or populations OR limited to 2-3 Sub-basins in Montana.
CommentGlobal distribution consists of several discontiguous areas.
Area of Occupancy
Score1-2 - Low to Moderate. Occurs in 4-25 Subwatersheds (6th Code HUC’s), though the species' distribution is not sufficiently documented to place it within one class.
CommentOccurred historically in over 10 subwatersheds, but it is unclear if a few of the sites are still extant.
Score2-3 - Moderate to Severe Declines:
CommentThough actual trends are unknown, much suitable habitat has been lost or degraded.
Score2-3 - High to Very High.
CommentInvasive weeds, hydrologic alterations, development and agricultural conversion are the primary threats. Much of its floodplain habitat remains threatened by one or more of these threats.
Score2 - High Vulnerability: Very specific biological attributes, unusual life history characteristics or limited reproductive potential makes the species highly susceptible to extirpation from stochastic events or other adverse impacts to its habitat and very slow to recover.
Score2 - High: Species is restricted to a highly specialized and limited habitat and is typically dependent upon unaltered, high-quality habitat (C Values of 8-10).
Raw Conservation Status Score
13 to 16 total points scored out of a possible 19.