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Hare's-foot Locoweed - Oxytropis lagopus var. conjugans
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State Rank Reason (see State Rank above)
Oxytropis lagopus variety conjugans is relatively rare in Montana. Plants occur in portions of central and southwestern Montana, mostly east of the Continental Divide with a few areas west of the Divide. Plants grow at low to moderate elevations in habitats that are often subject to human-caused alteration, degradation, and development. Approximately 40% of the known observations were made before 1950 and only a few observations have been reported since 2001. Population counts and extents are poorly documented. Over the long-term, Oxytropis lagopus var. conjugans appears to have most-likely declined. In the short-term, it appears populations are relatively stable or have experienced minor declines. Thus, there is uncertainty in the state conservation status rank.
General Description
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Phenology
Flowering May to June, fruiting in July.
Species Range
Montana Range
Range Descriptions
Native
Range Comments
Known from Lewis & Clark, Powell, Granite, and Teton Counties, central Montana; also found in Alberta, Canada.
Observations in Montana Natural Heritage Program Database
Number of Observations: 31
(Click on the following maps and charts to see full sized version)
Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Habitat
Sagebrush plains to lower mountains.
Ecology
POLLINATORS The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap:
Bombus appositus ,
Bombus bifarius ,
Bombus centralis ,
Bombus fervidus ,
Bombus flavifrons ,
Bombus melanopygus ,
Bombus nevadensis ,
Bombus rufocinctus ,
Bombus sylvicola ,
Bombus occidentalis ,
Bombus insularis , and
Bombus kirbiellus (Macior 1974, Bauer 1983, Shaw and Taylor 1986, Williams et al. 2014, Miller-Struttmann and Galen 2014).
Stewardship Responsibility
Threats or Limiting Factors
Reported threats to Montana's populations of Hare's-foot Locoweed have not specifically been identified. However, plants occur in habitats that are often subject to human-caused alteration, degradation, and development.
References
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