CPC Plant Profile: Schmoll's Milkvetch
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Plant Profile

Schmoll's Milkvetch (Astragalus schmolliae)

View of plant in native habitat. Note the seed pods that curve downward. Photo Credit: Carol Dawson
Description
  • Global Rank: G1 - Critically Imperiled
  • Legal Status: Candidate for Listing
  • Family: Fabaceae
  • State: CO
  • Nature Serve ID: 143808
  • Date Inducted in National Collection: 03/08/1989

First collected by Alice Eastwood in 1890, this species grows only on the tops of mesas in a small part of Mesa Verde National Park. Schmoll's milkvetch produces yellowish-white to creamy colored flowers with black hairs on the calyx during the months of May and June. Seeds of this species have been collected for ex-situ conservation and are currently being held at the National Seed Storage Laboratory in Fort Collins, Colorado. (CNPC 1997)

Participating Institutions
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Updates
  • 10/02/2020
  • Orthodox Seed Banking

Seeds of this species have been collected for ex-situ conservation and are currently being held at the National Seed Storage Laboratory in Fort Collins, Colorado. (CNPC 1997)

  • 10/02/2020
  • Seed Collection

Seeds of this species have been collected for ex-situ conservation and are currently being held at the National Seed Storage Laboratory in Fort Collins, Colorado. (CNPC 1997)

Nature Serve Biotics
  • 05/02/2017

Known only from Chapin Mesa in Mesa Verde National Park and the Ute Mountain Ute Reservation in Montezuma County, Colorado. Although the species is abundant there, much of its occupied habitat has been burned and is threatened by invasive exotics. Additionally, the species has apparently not crossed the canyons to establish itself on other adjacent mesa-tops.

Carol Dawson
  • 01/01/2010

Because this species is inherently rare, stochastic events are a threat.

Carol Dawson
  • 01/01/2010

Quite established on Chapin Mesa, but has not spread to other mesas.

Carol Dawson
  • 01/01/2010

None known.

Carol Dawson
  • 01/01/2010

The National Park Service closely monitors this species. (Von Bargen 1997)

Carol Dawson
  • 01/01/2010

Research is needed to determine the role of disturbance in population dynamics.

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Photos
Nomenclature
Taxon Astragalus schmolliae
Authority C.L.Porter
Family Fabaceae
CPC Number 485
ITIS 25668
USDA ASSC5
Common Names Schmoll's milkvetch | Schmoll milkvetch
Associated Scientific Names Astragalus schmolliae | Astragalus platycarpus var. montezumae | Astragalus schmollae
Distribution Colorado endemic (Chapin Mesa at Mesa Verde National Park, Montezuma Co.). (Spackman 1997)
State Rank
State State Rank
Colorado S1
Habitat

Sandy and gravelly flats and terraces, among juniper and pinyon pine, on sandstone and aeolian soils. Elev. 6800-7000 ft. (Spackman 1997)

Ecological Relationships

Ecological relationships are unknown.

Pollinators
Common Name Name in Text Association Type Source InteractionID
Bees
Bumble bees Bombus Confirmed Pollinator Link
Anthophorine bees Anthophoridae Confirmed Pollinator Link
Leaf-cutting bees Megachilidae Confirmed Pollinator Link
Flies
Bee flies Bombylius Confirmed Pollinator Link
Reintroduction
Lead Institution State Reintroduction Type Year of First Outplanting

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