Lupinus elatus
Encyclopedia
Lupinus elatus is a species of lupin
Lupin
Lupinus, commonly known as Lupins or lupines , is a genus in the legume family . The genus comprises about 280 species , with major centers of diversity in South and western North America , and the Andes and secondary centers in the Mediterranean region and Africa Lupinus, commonly known as Lupins...

e known by the common name tall silky lupine. It is endemic to 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...

, where it is known from the Transverse Ranges
Transverse Ranges
The Transverse Ranges are a group of mountain ranges of southern California, in the Pacific Coast Ranges physiographic region that runs along the Pacific coast from Alaska to Mexico in North America. The Transverse Ranges begin at the southern end of the California Coast Ranges and lie between...

 above Los Angeles
Los Angeles, California
Los Angeles , with a population at the 2010 United States Census of 3,792,621, is the most populous city in California, USA and the second most populous in the United States, after New York City. It has an area of , and is located in Southern California...

, and possibly also from the southernmost slopes of the Sierra Nevada. Its habitat includes dry areas in the forests of the mountains. This is an erect perennial herb reaching a maximum height near 90 centimeters. Each palmate leaf is made up of 6 to 8 leaflets up to 8 centimeters long. The herbage is coated in silvery silky to woolly hairs. 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 long raceme
Raceme
A raceme is a type of inflorescence that is unbranched and indeterminate and bears pedicellate flowers — flowers having short floral stalks called pedicels — along the axis. In botany, axis means a shoot, in this case one bearing the flowers. In a raceme, the oldest flowers are borne...

 of flowers, each about a centimeter long and arranged in whorls. The flower is purple or blue with a pale yellow patch on its banner. It yields a legume pod 2 or 3 centimeters long. This is a host plant to the Southern California native butterfly subspecies known as the San Gabriel Mountains Arrowhead Blue (Glaucopsyche piasus
Glaucopsyche piasus
The Arrowhead Blue is a western North American butterfly of the family Lycaenidae. It is a locally common butterfly that favors prairie, open woodland, and woodland edges and trails.-External links:*, Butterflies of Canada...

ssp. gabrielina).

External links

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