Steviopsis is a genus of Mexican plants in the tribe Eupatorieae within the family Asteraceae.King, Robert Merrill & Robinson, Harold Ernest. 1971. Studies in the Eupatorieae (Asteraceae) LIX. A new genus, Steviopsis. Phytologia 22: 156-157D.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.Tropicos, Steviopsis R.M. King & H. Rob.
Description Members of Steviopsis are perennial herbs that have heads composed entirely of disk flowers, a pappus of capillary bristles, narrow corollas with spreading lobes, and glands on the cypselae (achenes). The base chromosome number is x=10, which distinguishes it in part from the morphologically similar Brickellia. The genus is endemic to Mexico.
Taxonomy The genus was originally described by King and Robinson as part of the splitting of Eupatorium into monophyletic units. The distinctiveness and circumscription of the genus were recently assessed using molecular phylogenetic approaches Schilling, E. E., J. L. Panero, B. S. Crozier & P. Davila. 2013. Relationships of Asanthus (Asteraceae, Eupatorieae). Systematic Botany 38: 253-258.Turner, Billie Lee. 1988. Phytologia 64: 259-262
SpeciesTurner, B. L. 1997. The Comps of Mexico: A systematic account of the family Asteraceae, vol. 1 – Eupatorieae. Phytologia Memoirs 11: i–iv, 1–272 Steviopsis amblyolepis (B.L.Rob.) R.M.King & H.Rob. - Guerrero, Morelos, Michoacán Steviopsis arsenei R.M.King & H.Rob. - Michoacán Steviopsis dryophila (B.L.Rob.) B.L.Turner - Jalisco, Nayarit, Zacatecas, Sinaloa Steviopsis nesomii B.L.Turner - Nuevo León Steviopsis rapunculoides (DC.) R.M.King & H.Rob. - Jalisco, Guanajuato, Nayarit, Morelos, Michoacán Steviopsis vigintiseta (DC.) R.M.King & H.Rob. - Oaxaca, Puebla, Morelos, México State
formerly included see Asanthus Brickelliastrum Dyscritogyne
References