Astragalus anserinus
| Taxonomy | |||||
|---|---|---|---|---|---|
| Scientific Name: | Astragalus anserinus | ||||
| Common name: | Goose Creek milkvetch | ||||
| Rank and Status | |||||
|---|---|---|---|---|---|
| Global Rank: | G2 | Endemic: | No | ||
| Subnational (State) Rank: | S2 | Sand Dunes: | No | ||
| Native Status: | Native | Wetland: | No | ||
| NNHP Tracking Status: | At-Risk List | ||||
| Other Agency Status | Status | Last Updated | Status Comments |
|---|---|---|---|
| Bureau of Land Management - Nevada | Sensitive | 2011 BLM List | |
| Bureau of Land Management - Nevada | Sensitive | BLM Nevada Sensitive Species List dated 2017-10-01 | |
| Nevada Native Plant Society | Watch | ||
| CCVI Score | Extremely Vulnerable |
| Distribution (NV Counties) |
|---|
Status: Confident or certain
|
Elko |
| Summary Occurrence Data | |
|---|---|
| Occurrence Count: | 10 |
| Total Observed Area (hectares): | 17 |
| Maximum Known Elevation (m): | 1800 |
| Minimum Known Elevation (m): | 1585 |
| Links |
|---|
| Astragalus anserinus data at NatureServe |
| Astragalus anserinus photos and data at Encyclopedia of Life |
| Character Abstract | |
|---|---|
| Identification Comments: | |
| Subspecies Comments: | |
| Lookalikes: | Astragalus purshii and A. newberryi are distinguished by their usually larger flowers and fruit with dense spreading hairs concealing the fruit surface. A. calycosus has mostly close, straight, silvery hairs, larger yellowish to purple flowers, and narrower fruit divided into 2 chambers. |
| Phenology Comments: | Flowering on average probably begins in early to mid May and continues through most of June; fruit begins to mature and disperse in early to mid June and continues through mid August. |
| Reproduction Comments: | No evidence of asexual reproduction has been found; the plants may be pollinated by insects (Mancuso and Moseley 1991). The relatively small size of flowers suggests that self-pollination could also be involved (Morefield 1992). Overall seed dispersal is probably relatively local, with the most likely agents being seed-transporting insects or mammals, and surface runoff of precipitation (Morefield 1992). |
| Habitat Comments: | Dry, open, deeply weathered sandy rhyolitic ash of an overall grayish color derived from the Salt Lake Formation, consisting of white rhyolitic ash overlain by a thin veneer of black glassy gravel of apparent volcanic origin, mostly on south to west aspects, in sparse Juniperus osteosperma woodland. |
| Ecology Comments: | |
| Inventory Comments: | Surveys appeared substantially complete, but a recent disjunct discovery in the Owyhee Desert area of Nevada suggests that much potential habitat remains to be surveyed. |
| Inventory Needs: | |
| Version Date: |
 close-up of flowers etc
Photographer: Copyright Jody Fraser, U.S. Fish & Wildlife Service
Photo Date: |
 close-up of fruits etc
Photographer: Copyright Jody Fraser, U.S. Fish & Wildlife Service
Photo Date: |
 Astragalus anserinus fruits and flowers
Photographer: Jim Morefield (Nevada Natural Heritage Program)
Photo Date: 10 June |
