Steviopsis Explained

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]}

• 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^[6] see Asanthus Brickelliastrum Dyscritogyne

Notes and References

1. https://www.biodiversitylibrary.org/page/13786422#page/168/mode/1up King, Robert Merrill & Robinson, Harold Ernest. 1971. Studies in the Eupatorieae (Asteraceae) LIX. A new genus, Steviopsis. Phytologia 22: 156-157
2. 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.
3. http://www.tropicos.org/Name/40006074 Tropicos, Steviopsis R.M. King & H. Rob.
4. Schilling, E. E., J. L. Panero, B. S. Crozier & P. Davila. 2013. Relationships of Asanthus (Asteraceae, Eupatorieae). Systematic Botany 38: 253-258.
5. https://www.biodiversitylibrary.org/page/12984884#page/17/mode/1up Turner, Billie Lee. 1988. Phytologia 64: 259-262
6. https://archive.today/20141204234712/http://dixon.iplantcollaborative.org/compositaeweb/Default.aspx?Page=AdvNameSearch Flann, C (ed) 2009+ Global Compositae Checklist
7. 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