''Lupinus peirsonii'' is a rare species of
lupin
''Lupinus'', commonly known as lupin, lupine, or regionally bluebonnet, is a genus of plants in the legume family Fabaceae. The genus includes over 199 species, with centres of diversity in North and South America. Smaller centres occur in No ...
e known by the common names Peirson's lupine and long lupine. It is
endemic
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...
to the
San Gabriel Mountains
The San Gabriel Mountains () are a mountain range located in Los Angeles and San Bernardino counties, California, United States. The mountain range is part of the Transverse Ranges and lies between the Los Angeles Basin and the Mojave Desert ...
of
Los Angeles County, California
Los Angeles County, officially the County of Los Angeles and sometimes abbreviated as LA County, is the List of United States counties and county equivalents, most populous county in the United States, with 9,663,345 residents estimated in 202 ...
, where it grows in woodland and forest habitat. It is an erect, branching perennial herb growing tall. Each palmate leaf is made up of five to eight fleshy leaflets up to long. The herbage is coated in silvery silky hairs.
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
raceme
A raceme () or racemoid is an unbranched, indeterminate growth, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are ...
of whorled yellow flowers each about a centimeter in length. The fruit is a silky-haired
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 long.
References
External links
Jepson Manual TreatmentPhoto gallery
endemic flora of California
flora without expected TNC conservation status
peirsonii
natural history of Los Angeles County, California
natural history of the California chaparral and woodlands
natural history of the Transverse Ranges
San Gabriel Mountains
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