Tetraneuris
| bitterweed | |
|---|---|
 | |
| Tetraneuris acaulis in cultivation | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Tribe: | Helenieae[1] |
| Genus: | Tetraneuris E.L.Greene |
| Type species | |
| Tetraneuris acaulis (Pursh) E.L.Greene | |
| Synonyms[1] | |
|
Rydbergia Greene | |
Tetraneuris, commonly known as bitterweed, is a genus of North American plants in the sneezeweed tribe within the daisy family.[2][3]
The genus includes one annual, Tetraneuris linearifolia, with the remainder being perennials.
The name is of Greek origin, tetra, four and neuron, nerve, referring to the venation of the rays, which are three-lobed with the outer lobes themselves having an apparent vein down the middle.
- Tetraneuris acaulis - ALB SAS ND SD NE KS OK TX NM CO WY MT ID UT NV AZ CA
- Tetraneuris argentea - AZ NM
- Tetraneuris herbacea - ONT MI OH IL
- Tetraneuris ivesiana - UT CO NM AZ
- Tetraneuris linearifolia - Tamaulipas, Coahuila, Nuevo León, KS OK TX NM
- Tetraneuris scaposa - Chihuahua, Tamaulipas, Coahuila, Nuevo León, San Luis Potosí, Zacatecas, NE KS OK TX CO NM
- Tetraneuris torreyana - AZ NM UT CO WY MT
- Tetraneuris turneri - Coahuila, TX
- Tetraneuris verdiensis - AZ
- formerly included[1]
see Hymenoxys
- Tetraneuris brandegeei - Hymenoxys brandegeei
- Tetraneuris grandiflora - Hymenoxys grandiflora
References
- ↑ 1.0 1.1 1.2 1.3 Flann, C (ed) 2009+ Global Compositae Checklist
- ↑ Greene, Edward Lee. 1898. Pittonia 3(18A): 265–270 in English
- ↑ Tropicos, Tetraneuris Greene
- ↑ The Plant List search for Tetraneuris
- ↑ Turner, B. L. 2013. The comps of Mexico. A systematic account of the family Asteraceae (chapter 11: tribe Helenieae). Phytologia Memoirs 16: 1–100
- ↑ Biota of North America Program 2013 county distribution maps
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