Pilosella abscissa

Pilosella abscissa (synonym Hieracium abscissum) is a plant species in the dandelion tribe within the sunflower family. It is considered to be native to the southwestern United States (Arizona and New Mexico), Mexico and Central America.[1][2][3][4][5][6]

Pilosella abscissa
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichorieae
Genus: Pilosella
Species:
P. abscissa
Binomial name
Pilosella abscissa
F.W.Schultz & Sch.Bip.[1]
Synonyms[1]
  • Hieracium abscissum Less.
  • Hieracium anthurum Fr.
  • Hieracium comatum Fr.
  • Hieracium hirsutum Sessé & Moc.
  • Hieracium intybiforme Arv.-Touv.
  • Hieracium rusbyi Greene
  • Hieracium thyrsoideum Fr.
  • Pilosella comata (Fr.) F.W.Schultz & Sch.Bip.
  • Pilosella strigosa (D.Don) F.W.Schultz & Sch.Bip.

Pilosella abscissa is herbaceous and up to 75 cm (30 in) tall, with leaves on the stem and also in a rosette at the bottom. Leaves are lance-shaped, up to 20 cm (7.9 in) long, sometimes with teeth along the edge. One stalk branches toward the top, producing 5-60 flower heads. Each head has 20-24 yellow ray flowers but no disc flowers.[7]

References
  1. "Pilosella abscissa F.W.Schultz & Sch.Bip.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2019-01-28
  2. Biota of North America Program 2014 county distribution map
  3. Nash, D. L. 1976. Tribe XI, Cichorieae. In Nash, D.L. & Williams, L.O. (eds), Flora of Guatemala - Part XII. Fieldiana, Botany 24(12): 440–454, 598–603
  4. García-Mendoza, A. J. & J. A. Meave. 2011. Diversidad Florística de Oaxaca: de Musgos a Angispermas 1–351. Universidad Nacional Autónoma de México, Ciudad Universitaria
  5. Correa A., M.D., C. Galdames & M. Stapf. 2004. Catálogo de las Plantas Vasculares de Panamá 1–599. Smithsonian Tropical Research Institute, Panamá
  6. SEINet, Southwestern Biodiversity, Arizona chapter description, photos, distribution map
  7. Flora of North America, Hieracium abscissum Lessing, 1830.


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