Hazardia whitneyi
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Hazardia
Species:
H. whitneyi
Binomial name
Hazardia whitneyi
(A.Gray) Greene 1896
Synonyms[1][2]
  • Haplopappus whitneyi A. Gray 1868
  • Aplopappus whitneyi A. Gray 1868
  • Aster whitneyi (A.Gray) Kuntze

Hazardia whitneyi, common name Whitney's bristleweed,[3] is a North American species of shrub in the daisy family. It has been found only in the states of Oregon and California in the western United States.[4][5]

Hazardia whitneyi is a perennial herb or subshrub up to 50 cm (20 in) tall. The plant produces numerous flower heads in a dense, elongated array at the top of the plant. Each head contains 8-10 disc flowers but no ray flowers. The species sometimes grows on serpentine soils.[6]

Varieties[2][6]
  • Hazardia whitneyi var. discoidea (J.T.Howell) W.D.Clark - no ray flowers - California, Oregon in Klamath Mountains, southern Cascades, and north Coast Ranges
  • Hazardia whitneyi var. whitneyi - 5-18 ray flowers per head - California, primarily in Sierra Nevada

References

  1. ↑ Tropicos, Haplopappus whitneyi A. Gray
  2. 1 2 The Plant List, Hazardia whitneyi (A.Gray) Greene
  3. ↑ USDA, NRCS (n.d.). "Hazardia whitneyi". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 20 July 2015.
  4. ↑ Calflora taxon report, University of California, Hazardia whitneyi (A. Gray) E. Greene, Whitney's bristleweed
  5. ↑ Biota of North America Program 2014 county distribution map
  6. 1 2 Flora of North America, Hazardia whitneyi (A. Gray) Greene, 1896. Whitney’s bristleweed


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