Cryptantha roosiorum
Encyclopedia
Cryptantha roosiorum is a species of flowering plant in the borage family
Boraginaceae
Boraginaceae, the Borage or Forget-me-not family, include a variety of shrubs, trees, and herbs, totaling about 2,000 species in 146 genera found worldwide.A number of familiar plants belong to this family....

 known by the common name bristlecone cryptantha.

It is endemic to Inyo County, California
Inyo County, California
-National protected areas:* Death Valley National Park * Inyo National Forest * Manzanar National Historic Site-Major highways:* U.S. Route 6* U.S. Route 395* State Route 127* State Route 136* State Route 168* State Route 178...

, where it is known from only a a few occurrences in the northern Inyo Mountains
Inyo Mountains
The Inyo Mountains are a short mountain range east of the Sierra Nevada mountains in eastern California in the United States. The range separates the Owens Valley to the west with Saline Valley to the east, extending for approximately 70 mi SSE from the southern end of the White Mountains,...

.

It is a small, mat-forming perennial herb just a few centimeters high which grows from a woody caudex
Caudex
A caudex is a form of stem morphology appearing as a thickened, short, perennial stem that is either underground or near ground level . It may be swollen for the purpose of water storage, especially in xerophytes...

 rooted in rocky soils. The leaves are up to about a centimeter long, oval to spoon-shaped, and hairy to bristly. The inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...

is a dense cluster of tiny white flowers with five-lobed white corollas with yellow appendages.

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