Askellia pygmaea

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Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Askellia
Species:
A. pygmaea
Binomial name
Askellia pygmaea
(Ledeb.)Sennikov
Synonyms[1]
  • Askellia nana (Richardson) W.A.Weber
  • Barkhausia nana (Richardson) DC.
  • Crepis cochlearifolia Fisch. ex Herder
  • Crepis nana Richardson
  • Hieracioides nanum (Richardson) Kuntze
  • Prenanthes pygmaea Ledeb.
  • Youngia nana (Richardson) Rydb.
  • Youngia pygmaea (Ledeb.) Ledeb.

Askellia pygmaea, the dwarf alpine hawksbeard,[2] is a species of Asian and North American plants in the tribe Cichorieae within the family Asteraceae.

Distribution

It is native to western, northern, and eastern Canada (Yukon, Northwest Territories, British Columbia, Alberta, Nunavut, Quebec, Labrador, Newfoundland), the western United States (Alaska, Montana, Wyoming, Colorado, Idaho, Utah, Nevada, Washington, Oregon, California), Russia, Mongolia, Kazakhstan, and western China (Tibet + Xinjiang).[3][4]

Description

Askellia pygmaea is a perennial up to 20 cm (8 inches) tall, with a deep taproot and spreading by means of underground rhizomes thus forming dense clumps. Stems are sometimes erect, but sometimes trailing along the ground. One plant can have more than 80 small flower heads, each with 9-12 yellow ray florets but no disc florets.[5][4]

References

  1. ↑ The Plant List, Askellia pygmaea (Ledeb.) Sennikov
  2. ↑ USDA, NRCS (n.d.). "Crepis nana". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 21 June 2015.
  3. ↑ Biota of North America Program, 2014 state-level distribution map
  4. 1 2 Flora of China, 矮小假苦菜 ai xiao jia ku cai Askellia pygmaea (Ledebour) Sennikov, Komarovia. 5: 86. 2008.
  5. ↑ Flora of North America, Dwarf alpine hawksbeard, Crepis nana Richardson

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