Steviopsis
| Steviopsis | |
|---|---|
| |
| Steviopsis dryophila | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Eupatorieae |
| Genus: | Steviopsis R.M.King & H.Rob. |
| Type species | |
| Eupatorium adenospermum[1] | |
Steviopsis is a genus of Mexican plants in the tribe Eupatorieae within the family Asteraceae.[1][2][3]
Description
[edit]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
[edit]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]
- 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
- Steviopsis adenosperma - Dyscritogyne adenosperma
- Steviopsis dryophila - Dyscritogyne dryophila
- Steviopsis fendleri - Brickelliastrum fendleri
- Steviopsis squamulosa - Asanthus squamulosus
- Steviopsis thyrsiflora - Asanthus thyrsiflorus
- Steviopsis thyrsiflora var. solidaginifolia - Asanthus solidaginifolius
References
[edit]- ^ a b c King, Robert Merrill & Robinson, Harold Ernest. 1971. Studies in the Eupatorieae (Asteraceae) LIX. A new genus, Steviopsis. Phytologia 22: 156-157
- ^ 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.
- ^ Tropicos, Steviopsis R.M. King & H. Rob.
- ^ 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
- ^ a b Flann, C (ed) 2009+ Global Compositae Checklist
- ^ 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
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