Astragalus bolanderi
Encyclopedia
Astragalus bolanderi is a species of milkvetch
Astragalus
Astragalus is a large genus of about 3,000 species of herbs and small shrubs, belonging to the legume family Fabaceae, subfamily Faboideae. The genus is native to temperate regions of the Northern Hemisphere...

 known by the common name Bolander's milkvetch. It is native to western Nevada
Nevada
Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...

 and parts of the Sierra Nevada in California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. It grows in dry, rocky habitat on mountain and plateau.

Description

Astragalus bolanderi is a perennial herb producing erect, drooping, or creeping stems up to 40 centimeters long. The stems are mostly naked, with a sparse coat of long, wavy hairs and a few leaves on the upper parts. The leaves are up to 16 centimeters long and are made up of very widely spaced oval to nearly lance-shaped leaflets each up to 2 centimeters long. The leaflet has a hard midrib that ends in a point at the tip.

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 7 to 18 pealike flowers. Each flower is between 1 and 2 centimeters long and is purple-tinted white. The fruit is an inflated, curved legume pod up to 3 centimeters long. It dries to a thick papery texture.

External links

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