Pilosella friesii

Pilosella friesii (synonym Hieracium schultzii,[1] the roughstem hawkweed[2]) – not to be confused with the European P. schultesii – is a North American plant species in the dandelion tribe within the sunflower family. It is widespread across much of Mexico with a few populations in Guatemala and western Texas.[3][4][5]

Pilosella friesii
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichorieae
Genus: Pilosella
Species:
P. friesii
Binomial name
Pilosella friesii
F.W.Schultz & Sch.Bip.
Synonyms[1]
  • Hieracium bulbisetum Arv.-Touv.
  • Hieracium friesii Sch.Bip.
  • Hieracium jaliscopolum S.F.Blake
  • Hieracium liebmannii Zahn
  • Hieracium melanochryseum S.F.Blake
  • Hieracium nicolasii S.F.Blake
  • Hieracium oaxacanum B.L.Rob. & Greenm.
  • Hieracium rusbyi var. wrightii A.Gray
  • Hieracium schultzii Fr.
  • Hieracium wrightii (A.Gray) B.L.Rob. & Greenm.

Pilosella friesii is herbaceous and up to 70 cm (2.3 ft) tall with many hairs. Leaves are both on the stem and at the bottom. Leaves are up to 150 mm (5.9 in) long. One stalk can produce 3-25 flower heads in a conical or flat-topped array. Each head has 25-40 yellow ray flowers but no disc flowers.[6]

References
  1. "Pilosella friesii F.W.Schultz & Sch.Bip.". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-01-28.
  2. "Hieracium schultzii". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 23 July 2015.
  3. Biota of North America Program 2014 county distribution map
  4. Nash, D. L. 1976. Tribe XI, Cichorieae. En Nash, D.L. & Williams, L.O. (eds), Flora of Guatemala - Part XII. Fieldiana, Botany 24(12): 440–454, 598–603
  5. 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
  6. Flora of North America, Hieracium schultzii Fries, 1862.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.