Peck's Milkvetch / Center For Plant Conservation
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Plant Profile

Peck's Milkvetch (Astragalus peckii)

Astragalus peckii in habitat, close-up. Photo from iNaturalist, user suefluffy. CC BY-NC

Photo Credit: Susan Turner
  • Global Rank: G3 - Vulnerable
  • Legal Status: N/A
  • Family: Fabaceae
  • State: OR
  • Nature Serve ID: 132574
  • Lifeform: Subshrub, Forb/herb
  • Date Inducted in National Collection: 04/21/2023

Named in honor of renown Oregon botanist Morton E. Peck, Peck's milkvetch is an endemic species to central Oregon that is listed as threatened by the State of Oregon. This prostrate perennial has cream or yellow flowers and produces small pea pods. Peck's milkvetch often co-occurs with the Woolypod milkvetch (Astragalus purshii) and Lemmon's milkvetch (Astragalus lemmonii). A. peckii can be distinguished from the former by differences in pod morphology and from the latter which occurs on wetter habitats whereas A. peckii occurs in drier openings. Threats to this species include off road vehicles, invasive weed encroachment, and urbanization (Oregon Department of Agriculture 2023).

Where is Peck's Milkvetch (Astragalus peckii) located in the wild?


This species grows on well drained soil in openings in juniper woodlands, Poderosa pine forests, and lodgepole pine forests. Vegetation is typically sparse where this species occurs. (Oregon Department of Agriculture 2023).


This species is native to the Cascade Mountain Range

States & Provinces:

Peck's Milkvetch can be found in Oregon

Which CPC Partners conserve Peck's Milkvetch (Astragalus peckii)?

CPC's Plant Sponsorship Program provides long term stewardship of rare plants in our National Collection. We are so grateful for all our donors who have made the Plant Sponsorship Program so successful. We are in the process of acknowledging all our wonderful plant sponsorship donors on our website. This is a work in progress and will be updated regularly.

Conservation Actions

Katie Heineman
  • 04/21/2023
  • Seed Collection

Staff at Rae Selling Berry Conservation Program have collected wild individuals of Astragalus peckii from Deschutes National Forest and their seed bank also holds accessions from many additional populations collected in collaboration with other institutions.

Katie Heineman
  • 04/21/2023
  • Orthodox Seed Banking

As of 2023, Rae Selling Berry Seed Bank holds over 16,000 seeds from 163 maternal plants across seven wild populations of Astragalus peckii 

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Taxon Astragalus peckii
Authority Piper
Family Fabaceae
CPC Number 449723
ITIS 25628
Duration Perennial
Common Names Peck's milkvetch
Associated Scientific Names Astragalus peckii
Distribution This species is native to the Cascade Mountain Range
State Rank
State State Rank
Oregon S3
Ecological Relationships


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