Thelypodium eucosmum

It is endemic to Oregon in the United States, where it is known from Grant and Wheeler Counties.

The basal leaves are lance-shaped or sometimes oval in shape and are borne on a short petiole.

[4] This species occurs in the Blue Mountains of Oregon, and along tributaries of the John Day River.

[2][5] The plant's population size is greatly affected by the availability of water.

[5] Other plants in the habitat may include Balsamorhiza spp., Bromus mollis, B. tectorum, Ericameria nauseosa, Gutierrezia sarothrae, Hordeum murinum, Lepidium spp., Purshia tridentata, Salix spp., Sarcobatus vermiculatus, and Urtica dioica.