Steviopsis is a genus of Mexican plants in the tribe Eupatorieae within the family Asteraceae.[1][2][3]
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[1] as part of the splitting of Eupatorium into monophyletic units. The distinctiveness and circumscription of the genus were recently assessed using molecular phylogenetic approaches [4][5]
- Species[6][7]
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Steviopsis amblyolepis (B.L.Rob.) R.M.King & H.Rob. - Guerrero, Morelos, Michoacán
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Steviopsis arsenei R.M.King & H.Rob. - Michoacán
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Steviopsis dryophila (B.L.Rob.) B.L.Turner - Jalisco, Nayarit, Zacatecas, Sinaloa
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Steviopsis nesomii B.L.Turner - Nuevo León
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Steviopsis rapunculoides (DC.) R.M.King & H.Rob. - Jalisco, Guanajuato, Nayarit, Morelos, Michoacán
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Steviopsis vigintiseta (DC.) R.M.King & H.Rob. - Oaxaca, Puebla, Morelos, México State
- formerly included[6]
see Asanthus Brickelliastrum Dyscritogyne
References
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^ a b c King, Robert Merrill & Robinson, Harold Ernest. 1971. Studies in the Eupatorieae (Asteraceae) LIX. A new genus, Steviopsis. Phytologia 22: 156-157
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^ 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.
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^ Tropicos, Steviopsis R.M. King & H. Rob.
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^ Schilling, E. E., J. L. Panero, B. S. Crozier & P. Davila. 2013. Relationships of Asanthus (Asteraceae, Eupatorieae). Systematic Botany 38: 253-258.
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^ Turner, Billie Lee. 1988. Phytologia 64: 259-262
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^ a b Flann, C (ed) 2009+ Global Compositae Checklist
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^ Turner, B. L. 1997. The Comps of Mexico: A systematic account of the family Asteraceae, vol. 1 – Eupatorieae. Phytologia Memoirs 11: i–iv, 1–272
