Hazardia (plant)

Bristleweeds
Hazardia squarrosa
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Astereae
Subtribe: Machaerantherinae
Genus: Hazardia
Greene (1887)
Species[1]

11; see text

Synonyms[2]
  • Haplopappus sect. Hazardia (Greene) H.M.Hall

Hazardia is a small genus of North American flowering plants in the family Asteraceae. Plants in this genus may be called bristleweeds or goldenbushes.[3]

Hazardia is native to the western United States and northwestern Mexico, including offshore islands in the Pacific. The genus is especially common in California, and on the Baja California Peninsula in Mexico, with a few species extending into Oregon and Nevada.[3][4] They are short, hardy perennials or small leafy shrubs. Some species have sharply toothed leaves. Generally they bear yellow flowers, with some having ray florets and appearing somewhat daisylike while others have only disc florets.[5]

The genus was named after amateur botanist Barclay Hazard of Santa Barbara, 1852–1938.[3]

Species

11 species are accepted.[1][6][7][8]

Formerly placed here

  • Adeia discoidea (J.T.Howell) G.L.Nesom (as Hazardia whitneyi var. discoidea (J.T.Howell) W.D.Clark) – California and Oregon
  • Adeia whitneyi (A.Gray) G.L.Nesom (as Hazardia whitneyi (A.Gray) Greene) – California
  • Adiaphila brickellioides (S.F.Blake) G.L.Nesom (as Hazardia brickellioides (S.F.Blake) W.D.Clark ) - brickellbush goldenweed – California and Nevada

References

  1. ^ a b Hazardia Greene. Plants of the World Online. Retrieved 5 July 2024.
  2. ^ Tropicos, Hazardia Greene
  3. ^ a b c Greene, Edward Lee. 1887. Pittonia 1(2): 28–30 entirely in English
  4. ^ Calflora taxon report, University of California, Hazardia
  5. ^ Flora of North America, Bristleweed Hazardia Greene, 1887.
  6. ^ Flann, C (ed) 2009+ Global Compositae Checklist
  7. ^ Biota of North America Program 2013 county distribution maps
  8. ^ The Plant List, Hazardia
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