Vernonia

Trifolium gymnocarpon is a species of clover known by the common name hollyleaf clover.^[1]

It is native to the western United States, from California to New Mexico, and Oregon to Montana. It can be found in many types of habitat, including sagebrush scrub.

Trifolium gymnocarpon is a small perennial herb with stems spreading along the ground to form a flat mat or clump. The leaves are each made up of 3 to 5 thick, hairy leaflets with serrated edges. The inflorescence is an umbel of flowers spreading out or flexing downward. The flower is roughly a centimeter long and dull pink or brownish in color.

• Trifolium gymnocarpon ssp. plummerae — Plummer's clover, an Endangered species within California, but the subspecies is apparently secure, considering populations outside California.^[2]

• Calflora Database: Trifolium gymnocarpon (Hollyleaf clover)
• Jepson Manual eFlora (TJM2) treatment of Trifolium gymnocarpon ssp. plummerae
• Southwest Colorado Wildflowers
• UC CalPhotos gallery: Trifolium gymnocarpon ssp. plummerae