Holmgren milk-vetch (Astragalus holmgreniorum)

Federal Register | Recovery | Critical Habitat | Conservation Plans | Petitions | Life History

Listing Status:   

Where Listed: WHEREVER FOUND

General Information

A member of the pea family, this species grows close to the ground and is a herbaceous, non-woody perennial that produces small purple flowers in the spring, and dies back to the root crown after the flowering season. The plantís pinnately compound (arranged on opposite sides of the stem in a row) leaves arise directly from the root crown. The leaves are pressed close to the ground, and are 4 to 13 cm (1.5 to 5.1 in) long, and have 9 to 15 leaflets. The leaflets are 0.8 to 1.6 cm (0.3 to 0.6 in) long and are broadly obovate (oval with the narrow end towards the base of the leaf) in shape. The flowers are purple, 1.8 to 2.4 cm (0.7 to 0.9 in) long, and 0.6 to 0.9 cm (0.2 to 0.4 in) wide and have the distinctive pea-like flowers with 5 petals. Flowers occur along the stalk in groups of 6 to 16. The fruits are pods 3 to 5 cm (1 to 2 in) long and 0.6 to 0.9 cm (0.2 to 0.4 in) across. The pods retain seeds even after the pods fully open up along the margin. With age, each pod eventually drys out and opens up at both the top and bottom ends (Barneby 1989; Stubben 1997).

  • States/US Territories in which the Holmgren milk-vetch is known to or is believed to occur:  Arizona , Utah
  • US Counties in which the Holmgren milk-vetch is known to or is believed to occur:  View All
 
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
09/28/2001 Mountain-Prairie Region (Region 6)

» Federal Register Documents

Federal Register Documents
Date Citation Page Title
04/12/2000 65 FR 19728 19734 Proposed Determination of Endangered Status for Astragalus Holmgreniorum (Holmgren Milk-Vetch) and Astragalus Ampullarioides (Shivwits Milk-Vetch)
09/29/2006 71 FR 57557 57558 Recovery Plan for Holmgren milk-vetch (Astragalus holmgreniorum) and Shivwits milk-vetch (Astragalus ampullarioides)
12/27/2006 71 FR 77972 78012 Final Designation of Critical Habitat for Astragalus ampullarioides (Shivwits milk-vetch) and Astragalus holmgreniorum (Holmgren milk-vetch)
09/19/1997 62 FR 49398 49397 Review of Plant and Animal Taxa
02/28/1996 61 FR 7597 7613 ETWP; Review of Plant and Animal Taxa That Are Candidates for Listing as Endangered or Threatened Species
02/21/1990 55 FR 6184 6229 ETWP; Review of Plant Taxa for Listing as Endangered or Threatened Species; Notice of Review; 55 FR 6184 6229
09/27/1985 50 FR 39526 39584 Review of Plant Taxa for Listing as End. or Thr. Species; Notice of Review; 50 FR 39526-39584
09/28/2001 66 FR 49560 49567 ETWP; Determination of Endangered status for Astragalus holmgreniorum (Holmgren milk-vetch)and Astragalus ampullarioides (Shivwits milk-vetch)
10/25/1999 64 FR 57535 57547 Review of Plant and Animal Taxa That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Recycled Petitions; Annual Description of Progress on Listing Actions
11/28/1983 48 FR 53640 53670 Supplement to Review of Plant Taxa for Listing as End. or Thr. Species; 48 FR 53640-53670
09/26/2006 71 FR 56085 56094 Designation of Critical Habitat for Astragalus ampullarioides (Shivwits Milk-Vetch) and Astragalus holmgreniorum (Holmgren Milk-Vetch: Revised proposed rule; reopening of public comment period, notice of availability of draft economic analysis and draft environmental assessment, and revisions to proposed critical habitat boundaries.
09/30/1993 58 FR 51144 51190 ETWP; Review of Plant Taxa for Listing as Endangered or Threatened Species
10/30/2001 66 FR 54808 54832 ETWP; Review of Plant and Animal Species That Are Candidates or Proposed for Listing as Endangered or Threatened,Annual Notice of Findings on Recycled Petitions, and Annual Description of Progress on Listing Actions; Proposed Rule
04/07/2006 71 FR 17900 17902 Initiation of a 5-Year Review of Maguire Daisy, Holmgren Milk-Vetch, Shivwits Milk-Vetch, Virgin River Chub, Woundfin, and Kanab Ambersnail
03/29/2006 71 FR 15966 16002 Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Astragalus ampullarioides (Shivwits Milk-Vetch) and Astragalus holmgreniorum (Holmgren Milk-Vetch): Proposed rule.
08/01/2006 71 FR 43514 43515 Endangered and Threatened Wildlife and Plants; Draft Recovery Plan for Astragalus holmgreniorum (Holmgren milk-vetch) and Astragalus ampullarioides (Shivwits milk-vetch)
05/27/2016 81 FR 33698 33700 ETWP; Initiation of 5-Year Status Reviews of 21 Species in the Mountain-Prairie Region

» Recovery

Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
09/22/2006 Astragalus holmgreniorum (Holmgren Milk-Vetch) and Astragalus ampullarioides (Shivwits Milk-Vetch) Recovery Plan View Implementation Progress Final
Other Recovery Documents
Date Citation Page Title Document Type
09/29/2006 71 FR 57557 57558 Recovery Plan for Holmgren milk-vetch (Astragalus holmgreniorum) and Shivwits milk-vetch (Astragalus ampullarioides)
  • Notice Final Recovery Plan Availability
04/07/2006 71 FR 17900 17902 Initiation of a 5-Year Review of Maguire Daisy, Holmgren Milk-Vetch, Shivwits Milk-Vetch, Virgin River Chub, Woundfin, and Kanab Ambersnail
  • Notice 5-year Review, Initiation
05/27/2016 81 FR 33698 33700 ETWP; Initiation of 5-Year Status Reviews of 21 Species in the Mountain-Prairie Region
  • Notice 5-year Review, Initiation
08/01/2006 71 FR 43514 43515 Endangered and Threatened Wildlife and Plants; Draft Recovery Plan for Astragalus holmgreniorum (Holmgren milk-vetch) and Astragalus ampullarioides (Shivwits milk-vetch)
  • Notice Draft Recovery Plan Availability
Five Year Review
Date Title
04/21/2007 Shivwits milk-vetch and Holmgren milk-vetch 5-Year Review

» Critical Habitat

Date Citation Page Title Document Type Status
12/27/2006 71 FR 77972 78012 Final Designation of Critical Habitat for Astragalus ampullarioides (Shivwits milk-vetch) and Astragalus holmgreniorum (Holmgren milk-vetch) Final Rule Final designated
03/29/2006 71 FR 15966 16002 Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Astragalus ampullarioides (Shivwits Milk-Vetch) and Astragalus holmgreniorum (Holmgren Milk-Vetch): Proposed rule. Proposed Rule Not Required

To learn more about critical habitat please see http://ecos.fws.gov/crithab

» Conservation Plans

No conservation plans have been created for Holmgren milk-vetch.

» Petitions

» Life History

Habitat Requirements

Grows on the shallow, sparsely vegetated soils derived primarily from the Virgin limestone member of the Moenkopi Formation. The species is a principal member of a warm-desert shrub vegetative community.

Movement / Home Range

The number of individual plants in all the speciesí populations varies considerably from year to year. Three small populations exist in Washington County, Utah and adjacent Mohave County, Arizona.

Reproductive Strategy

An extremely short-lived perennial herb with low survivorship from germination to 1 year-old juvenile or reproductive adult. Few plants live past two growing seasons. Capable of producing seed in more than 1 year. Nonseedlings, i.e., plants entering their second year of growth or older plants, appear several weeks before seedlings, generally in late February or early March, although some emerge as early as mid-January. Seedlings are present several weeks following adult emergence. The best time to detect the species is while it is producing flowers and fruit. Flowering occurs between March and April, and the majority of plants set fruit by the end of April. Seed pods persist until the end of May. Plants then die back to roots between late May and mid-June.

» Other Resources

NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.