Horkelia tularensis
Encyclopedia
Horkelia tularensis is a species of flowering plant in the rose family
Rosaceae
Rosaceae are a medium-sized family of flowering plants, including about 2830 species in 95 genera. The name is derived from the type genus Rosa. Among the largest genera are Alchemilla , Sorbus , Crataegus , Cotoneaster , and Rubus...

 known by the common name Kern Plateau horkelia. It is endemic to Tulare County, California
Tulare County, California
Tulare County is a county located in the Central Valley of the U.S. state of California, south of Fresno. Sequoia National Park is located in the county, as are part of Kings Canyon National Park, in its northeast corner , and part of Mount Whitney, on its eastern border...

, where it is known from about ten occurrences in the High Sierra Nevada. It grows in rocky, exposed areas. This is a mat-forming perennial herb producing clumps of short, erect leaves and stems. The leaves are up to about 10 centimeters long and are made up of small closely packed leaflets. The foliage is covered in hairs that give the plant a light gray-green color. Stems grow to about 20 centimeters in maximum height and hold 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...

s of several flowers each. The flower has pointed green sepal
Sepal
A sepal is a part of the flower of angiosperms . Collectively the sepals form the calyx, which is the outermost whorl of parts that form a flower. Usually green, sepals have the typical function of protecting the petals when the flower is in bud...

s up to half a centimeter long and shorter, narrow white petals.

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