''Hesperolinon breweri'' is a rare species of flowering plant in the flax family known by the common names Brewer's dwarf flax and Brewer's western flax. 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 three counties in the

San Francisco Bay Area The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area Go ...

. It is found in chaparral ecosystems, often on serpentine soils. This is an annual herb growing erect to a maximum height near centimeters. Its narrow, linear leaves are greenish to purplish in color. It produces dense

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 ...

s of flowers with glandular

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coine ...

s and five bright yellow petals. The protruding stamens hold large orange-yellow anthers. This uncommon California endemic is threatened by development of its habitat but its current status is not known.

References

External links

Jepson Manual TreatmentPhoto gallery
breweri Endemic flora of California Natural history of the California chaparral and woodlands Natural history of the California Coast Ranges Endemic flora of the San Francisco Bay Area {{Malpighiales-stub