Crataegus pruinosa

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Crataegus pruinosa
Frosted Thorn (2981720487).jpg
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Rosales
Family: Rosaceae
Genus: Crataegus
Section: Coccineae
Series: Pruinosae
(Beadle ex Sarg.) Rehder[1]
Species: C. pruinosa
Binomial name
Crataegus pruinosa
(H.L.Wendl.) K.Koch

Crataegus pruinosa is a species of hawthorn known by the common name frosted hawthorn. It is native to a wide area of the eastern United States and southern Canada, and is sometimes considered to be several species, rather than just one.

Varieties[edit]

The following varieties are recognized in the Flora of North America (2015):[2]

  • C. pruinosa var. pruinosa, synonyms:
    • C. bracteata Sarg.
    • C. tumida Sarg.
  • C. pruinosa var. dissona (Sarg.) Eggl., synonyms:
    • C. dissona Sarg.
    • C. brachypoda Sarg.
    • C. disjuncta Sarg.
    • C. rigida Sarg.
  • C. pruinosa var. parvula (Sarg.) J.B.Phipps, synonyms:
    • C. parvula Sarg.
  • C. pruinosa var. rugosa (Ashe) Kruschke, synonyms:
    • C. rugosa Ashe
    • C. leiophylla Sarg.
    • C. mackenziei Sarg. ex Mackenzie
    • C. rubicundula Sarg.
    • C. seclusa Sarg.
    • C. seducta Sarg.
  • C. pruinosa var. virella (Ashe) Kruschke, synonyms:
    • C. virella Ashe
  • C. pruinosa var. magnifolia (Sarg.) J.B.Phipps, synonyms:
    • C. magnifolia Sarg.

References[edit]

  1. ^ Phipps, J.B.; Robertson, K.R.; Smith, P.G.; Rohrer, J.R. (1990). A checklist of the subfamily Maloideae (Rosaceae). Canadian Journal of Botany. 68(10): 2209–2269.
  2. ^ Phipps, J.B. (2015), "Crataegus pruinosa (H. L. Wendland) K.Koch Hort. Dendrol. 168 1853", in L. Brouillet; K. Gandhi; C.L. Howard; H. Jeude; R.W. Kiger; J.B. Phipps; A.C. Pryor; H.H. Schmidt; J.L. Strother; J.L. Zarucchi, Flora of North America North of Mexico, Volume 9: Magnoliophyta: Picramniaceae to Rosaceae, New York, Oxford: Oxford University Press, pp. 574–577 

External links[edit]

  • Phipps, J.B., O’Kennon, R.J., Lance, R.W. (2003). Hawthorns and medlars. Royal Horticultural Society, Cambridge, U.K.
  • USDA Plants Profile