Tetraneuris

Tetraneuris, commonly known as four-nerve daisy[2] or bitterweed, is a genus of North American plants in the sneezeweed tribe within the daisy family.[3][4]

Tetraneuris
Tetraneuris acaulis in cultivation
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Tribe:
Helenieae[1]
Genus:
Tetraneuris

Type species
Tetraneuris acaulis
Synonyms[1]
  • Rydbergia Greene

The genus includes one annual, Tetraneuris linearifolia, with all the other species 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.

Species[1][5][6][7]
formerly included[1]

see Hymenoxys

References
  1. Flann, C (ed) 2009+ Global Compositae Checklist Archived 2015-01-17 at Archive.today
  2. "Tetraneuris". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 9 December 2015.
  3. Greene, Edward Lee. 1898. Pittonia 3(18A): 265–270 in English
  4. Tropicos, Tetraneuris Greene
  5. The Plant List search for Tetraneuris
  6. Turner, B. L. 2013. The comps of Mexico. A systematic account of the family Asteraceae (chapter 11: tribe Helenieae). Phytologia Memoirs 16: 1–100
  7. Biota of North America Program 2013 county distribution maps


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