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Brickellia is a genus of about 100 to 110 Brickellia. The Jepson eFlora 2013. species of in the family Asteraceae, known commonly as brickellbushes. They are found in Canada, the United States, Mexico, and Central America. Many species are native to the American southwest, especially Texas. Brickellia is among the more basal lineages of the Eupatorieae and should not be assigned to a subtribe pending further research.Schmidt, G. J. and E. E. Schilling. (2000). Phylogeny and biogeography of Eupatorium (Asteraceae: Eupatorieae) based on nuclear ITS sequence data. Am. J. Bot. 87(5), 716-26.
They are mostly woody perennial . Some species have a very strong pleasant scent, while others smell distasteful. All contain high amounts of . germacrene, a natural insecticide, is found in B. veronicifolia and probably other species, if not all.Rivero-Cruz, B., et al. (2006). Qualitative and quantitative analysis of the active components of the essential oil from Brickellia veronicaefolia by nuclear magnetic resonance spectroscopy. Journal of Natural Products 69(8), 1172-76.
Despite their chemical defenses, brickellbushes are food for of certain Lepidoptera. These include the noctuidae Schinia trifascia, Schinia oleagina, which is known only from Brickellia, Schinia buta, which is only known from B. californica, and Schinia gracilenta, which is only known from B. eupatorioides.
The genus is named for John Brickell, 1748–1809, Irish-born physician and naturalist.
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