''Lupinus citrinus'' is a species of lupine known by the common names orange lupine, orangeflower lupine, and fragrant lupine. It is

endemic Endemism is the state of a species being found 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 found else ...

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

, where it is known from a section of the

Sierra Nevada foothills :''See Sierra Nevada for general information about the mountain range in the United States.'' The ecology of the Sierra Nevada, located in the U.S. states of California and Nevada, is diverse and complex: the plants and animals are a significan ...

extending from Mariposa to Fresno Counties. This is an annual herb growing tall. Each palmate leaf is made up of 6 to 9 leaflets up to long. The herbage is coated in tiny white hairs. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a Plant stem, stem that is composed of a main branch or a complicated arrangement of branches. Morphology (biology), Morphologically, it is the modified part of the shoot of sperma ...

bears several flowers, sometimes in

whorls A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...

. Each flower is roughly a centimeter long and orange to yellow to white in color. The fruit is a legume pod 1 or long containing seeds which resemble "pieces of

granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies under ...

."Jepson Manual Treatment
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References

External links

Photo gallery
citrinus Endemic flora of California {{Lupinus-stub