''Astragalus andersonii'' is a species of
milkvetch
''Astragalus'' is a large genus of over 3,000 species of herbs and small shrubs, belonging to the legume family Fabaceae and the subfamily Faboideae. It is the largest genus of plants in terms of described species. The genus is native to temper ...
known by the common name Anderson's milkvetch. It is native to eastern
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
and western
Nevada
Nevada ( ; ) is a landlocked state in the Western United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, th ...
, where it is found in the plateaus at the foot of the
Sierra Nevada
The Sierra Nevada ( ) is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primari ...
, including the
Modoc Plateau
__NOTOC__
The Modoc Plateau lies in the northeast corner of California as well as parts of Oregon and Nevada. Nearly of the Modoc National Forest are on the plateau between the Medicine Lake Highlands in the west and the Warner Mountains in the ...
. It was named after
Charles Lewis Anderson by
Asa Gray
Asa Gray (November 18, 1810 – January 30, 1888) is considered the most important American botany, botanist of the 19th century. His ''Darwiniana'' (1876) was considered an important explanation of how religion and science were not necessaril ...
.
Description
This is a small perennial herb forming a thick patch on the ground, the stems reaching about 20 centimeters in maximum length. The plant is coated in dense gray to white wavy hairs. The leaves are up to 10 centimeters long and made up of several oval-shaped leaflets. The
inflorescence
In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a mai ...
is a projecting or upright array of 12 to 26 pealike flowers. Each flower is white, often purple-tinted or purple-veined, and between 1 and 2 centimeters long. The fruit is a curved
legume
Legumes are plants in the pea family Fabaceae (or Leguminosae), or the fruit or seeds of such plants. When used as a dry grain for human consumption, the seeds are also called pulses. Legumes are grown agriculturally, primarily for human consum ...
pod 1 to 2 centimeters long.
It is coated in very long white hairs and dries to a thick papery texture, the beans inside rattling with the wind.
References
External links
Jepson Manual Treatment of ''Astragalus andersonii''USDA Plants Profile for ''Astragalus andersonii''UC CalPhotos gallery
andersonii
Flora of California
Flora of Nevada
Flora of the Great Basin
Flora of the Sierra Nevada (United States)
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Endemic flora of the United States
Plants described in 1865
Flora without expected TNC conservation status
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