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 Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Helenieae
Subtribe: Tetraneurinae
Genus: Tetraneuris
E.L.Greene 1898
Type species
Tetraneuris acaulis
Synonyms[1]
  • Rydbergia Greene

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

The name is of Greek origin, deriving from tetra, meaning "four", and neuron, meaning "nerve", which refers to the venation of the rays: 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. USDA, NRCS (n.d.). "Tetraneuris". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. 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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