Dieteria bigelovii

Dieteria bigelovii, also known as Bigelow's tansyaster[3] or sticky aster,[4] is a North American species of plants in the family Asteraceae.

Dieteria bigelovii
Fig. nº 4

Apparently Secure  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Dieteria
Species:
D. bigelovii
Binomial name
Dieteria bigelovii
(A.Gray) D.R.Morgan & R.L.Hartm.
Synonyms[2]
Synonymy
  • Aster aquifolius (Greene ex Wooton & Standl.) S.F.Blake
  • Aster bigelovii A.Gray
  • Aster pattersonii A.Gray
  • Aster rubrotinctus S.F.Blake
  • Aster townshendii Hook.f.
  • Machaeranthera aquifolia Greene ex Wooton & Standl.
  • Machaeranthera aquifolia Greene
  • Machaeranthera aspera Greene
  • Machaeranthera bigelovii (A.Gray) Greene
  • Machaeranthera centaureoides Greene ex Wooton & Standl.
  • Machaeranthera pattersonii (A.Gray) Greene
  • Machaeranthera rubricaulis Rydb.
  • Machaeranthera spectabilis Greene
  • Machaeranthera varians Greene
  • Machaeranthera viscosula Rydb.
  • Machaeranthera commixta Greened, syn of var. commixta
  • Aster adenolepis S.F.Blake, syn of var. mucronata
  • Machaeranthera mucronata Greene, syn of var. mucronata

Description

D. bigelovii is a biennial or perennial herb growing to 30–90 centimetres (12–35 inches) in height. The leaves are 5–10 cm (2–4 in) long with sharp teeth.[4] Between August and October, the plant produces several flower heads about 4 cm (1+1⁄2 in) wide.[4] The blue or purple ray florets are female, while the yellow disc florets are bisexual.[5][6] The ray florets close upwards in shade.[4] The fruit is seedlike, with bristles at the tip.[4]

True asters are similar, but usually lack spiny or divided leaves.[4]

Taxonomy
Varieties[2][5]

Distribution and habitat

The species is native to the southwestern United States (Arizona, New Mexico, Utah, Colorado, and Albany County in Wyoming).[7] It can be found in open areas of coniferous forests.[4]

Dieteria bigelovii was evaluated by NatureServe as G4, "apparently secure", in 1993. This means that at a global level it has fairly low risk of extinction or collapse due to an extensive range and/or many populations or occurrences, but with possible cause for some concern as a result of local recent declines, threats, or other factors. It was additionally rated critically imperiled (S1) in Nevada, imperiled (S2) in Wyoming, and vulnerable (S3) in Arizona.[1]

References
  1. NatureServe (2023). "Dieteria bigelovii". NatureServe Explorer. Arlington, Virginia: NatureServe. Retrieved 1 May 2023.
  2. The Plant List Dieteria bigelovii (A.Gray) D.R.Morgan & R.L.Hartm.
  3. USDA, NRCS (n.d.). "Machaeranthera bigelovii var. bigelovii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 21 June 2015.
  4. Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. p. 385. ISBN 978-0-375-40233-3.
  5. Flora of North America, Dieteria bigelovii (A. Gray) D. R. Morgan & R. L. Hartman, Sida. 20: 1394. 2003.
  6. Gray, Asa 1857. Reports of explorations and surveys: to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean, made under the direction of the Secretary of War 4(5): 97
  7. Biota of North America Program 2014 county distribution map


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