Tygh Valley Milkvetch (Astragalus tyghensis)

Tygh Valley milkvetch

Photo Credit: Kris Freitag

Global Rank: G2 - Imperiled
Legal Status: N/A
Family: Fabaceae
State: OR
Nature Serve ID: 146792
Lifeform: Forb/herb
Date Inducted in National Collection: 09/13/2022

Description:

Where is Tygh Valley Milkvetch (Astragalus tyghensis) located in the wild?

States & Provinces:

Tygh Valley Milkvetch can be found in Oregon

Which CPC Partners conserve Tygh Valley Milkvetch (Astragalus tyghensis)?

Rae Selling Berry Seed Bank & Plant Conservation Program

Partially Sponsored

Conservation Actions

Kris Freitag

09/15/2022

As part of CPC's IMLS funded initiative to determine seed storage longevity in wild rare plant species, seed of Tygh Valley milkvetch (Astragalus tyghensis) was collected at a BLM site along the White River in central Oregon. This plant is found only in Oregon’s Wasco County, in sagebrush-bunchgrass communities. The spring’s unusually wet and cool weather may have affected seed set and certainly made it more difficult to judge when to collect. However, we managed to collect enough apparently good seed for the purpose. Each tough capsule had to be carefully pried open in the lab to extract the small bean-like seeds, so it was an especially laborious taxon to work with.