Brickelliastrum is a North American genus of flowering plants in the tribe Eupatorieae within the family Asteraceae.King, R. M. and H. Robinson. 1972 Studies in the Eupatorieae (Asteraceae) LXXVIII. A new genus, Brickelliastrum. Phytologia 62: 63-64.24(2): 64. 1972.D.J.N.Hind & H.E.Robinson. 2007. Tribe Eupatorieae In: The Families and Genera of Vascular Plants vol.VIII. (Joachim W.Kadereit & Charles Jeffrey, volume editors. Klaus Kubitzky, general editor). Springer-Verlag. Berlin, Heidelberg. Its species are native to Arizona, New Mexico, and Texas in the United States and to northern Mexico.
Brickelliastrum has at times been lumped with Brickellia or Steviopsis, but chromosome number (x=10) and molecular data are in agreement in showing that it is distinct from either of these.Schilling, E. E., J. L. Panero, B. S. Crozier & P. Davila. 2013. Relationships of Asanthus (Asteraceae, Eupatorieae). Systematic Botany 38: 253-258. Despite having the general appearance of Brickellia, members of Brickelliastrum have cypselae that have only 5-7 ribs (vs. 10), funnel-shaped corollas, and a style with an unenlarged, glabrous base.
Species , Plants of the World Online accepted two species: Brickelliastrum fendleri (A.Gray) R.M.King & H.Rob. Brickelliastrum nesomii (B.L.Turner) R.M.King & H.Rob., syns. Brickelliastrum villarrealii, Steviopsis nesomii B.L.Turner
References
External links photo of herbarium specimen at Missouri Botanical Garden, collected in New Mexico, type specimen of Brickelliastrum fendleri Vascular Plants of the Gila Wilderness Calphotos photo gallery, University of California