Tetrapteron graciliflorum
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Onagraceae
Genus: Tetrapteron
Species:
T. graciliflorum
Binomial name
Tetrapteron graciliflorum
(Hook. & Arn.) W.L.Wagner & Hoch
Synonyms
  • Camissonia graciliflora (Hook. & Arn.) P.H.Raven
  • Oenothera graciliflora Hook. & Arn.
  • Taraxia graciliflora (Hook. & Arn.) Raim.

Tetrapteron graciliflorum is a species of evening primrose known by the common name hill suncup.[1] It is native to Oregon and California, where it grows in several habitat types, often on clay soils. It is an annual herb generally with no stem but producing an upright, nodding inflorescence. There is a cluster of narrow leaves each one to ten centimeters long. The flowers have bright yellow petals one half to two centimeters long. The fruit is a leathery capsule less than a centimeter in length with four chambers containing bumpy brown seeds.

References

  1. ↑ USDA, NRCS (n.d.). "Camissonia graciliflora". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 9 December 2015.


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