''Brickellia microphylla'', the littleleaf brickellbush, is a flowering plant species in the family Asteraceae native to western

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

.Calflora taxon report, University of California, ''Brickellia microphylla'' (Nutt.) A. Gray, little leaved brickellia, littleleaf brickellbush
/ref> Jepson Manual eFlora (TJM2) treatment of ''Brickellia microphylla''
/ref>

Distribution and habitat

The plant is widespread across much of the Western United States and Northwestern Mexico. It is found from California and Baja California east to New Mexico and Colorado, and north to Washington, Idaho, and Wyoming. ''Brickellia microphylla'' var. ''scabra'' has a more eastern and southern distribution in the species' range, and grades into ''Brickellia microphylla'' var. ''microphylla'' in southern and central Utah and eastern California.

Description

''Brickellia microphylla'' is a shrub in size. It produces many small, pale yellow

flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...

pale yellow, often purple-tinged. They are often clumped together at the ends of branches.Flora of North America ''Brickellia microphylla'' (Nuttall) A. Gray
/ref> The bloom period is July to October.

Varieties

Varieties, which can intergrade, include: * ''Brickellia microphylla'' var. ''microphylla'' — Littleleaf brickellbush, native to California, Baja California (México), Arizona, Colorado, Idaho, Nevada, Oregon, Utah, Washington, and Wyoming. * ''Brickellia microphylla'' var. ''scabra'' A.Gray — Rough brickellbush, native to southeastern California, Baja California, Arizona, Colorado, Nevada, New Mexico,

Sonora Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is d ...

(México), Utah, and Wyoming. * ''Brickellia microphylla'' var. ''watsonii'' — Watson's brickellbush, native to southeastern California, Arizona, Nevada, Utah. USDA Plants: ''Brickellia microphylla'' var. ''watsonii''
/ref>

References

External links

Calflora Database: ''Brickellia microphylla'' (Little leaved brickellia, Littleleaf brickellbush) Jepson Manual eFlora (TJM2) treatment of ''Brickellia microphylla'' USDA Plants Profile for ''Brickellia microphylla'' (littleleaf brickellbush) UC CalPhotos gallery of ''Brickellia microphylla''
microphylla Flora of the Northwestern United States Flora of the Southwestern United States Flora of Baja California Flora of California Flora of New Mexico Flora of Sonora Flora of the Great Basin Natural history of the Mojave Desert Natural history of the Transverse Ranges Plants described in 1840 Taxa named by Asa Gray Taxa named by Thomas Nuttall Flora without expected TNC conservation status {{Eupatorieae-stub