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Carphochaete is a genus of in the family Asteraceae. Gray, Asa. 1849. Memoirs of the American Academy of Arts and Science, new series 4(1): 65 descriptions in Latin, commentary in English Tropicos, Carphochaete A. Gray They are native to Mexico and the southwestern United States. Carphochaete. Flora of North America. They are known commonly as bristleheads. Carphochaete. Integrated Taxonomic Information System (ITIS).
These are branching and usually growing 20 to 45 centimeters tall, but known to well exceed one meter at times. The leaves have glandular pits. They are usually opposite but are sometimes arranged alternately. The pseudanthium are solitary or paired, or occasionally in arrays of several. They are just a few millimeters wide and usually contain 3 or 4 white, pink, or purple funnel-shaped disc florets, sometimes more. The hairy, ribbed cypsela is tipped with a pappus of long scales.
Classification
Carphochaete is in the tribe Eupatorieae of the family Asteraceae. Like other members of this tribe, the flower heads have and no ray florets. Some authors include the genus Cronquistia in Carphochaete.Watanabe, K., et al. (2007). Chromosome numbers and karyotypes in Asteraceae. Annals of the Missouri Botanical Garden 94(3), 643-54.
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