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Crataegus pennsylvanica, known as the Pennsylvania thorn,[1] is a species of hawthorn native to Delaware, New York, North Carolina, Ontario, Ohio, and Pennsylvania,[1] that grows to about 8 m in height.[1] The mature trees have few thorns.[1]

Crataegus pennsylvanica
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rosaceae
Genus: Crataegus
Section: Crataegus sect. Coccineae
Series: Crataegus ser. Molles
Species:
C. pennsylvanica
Binomial name
Crataegus pennsylvanica
Synonyms[1]
  • C. tatnalliana Sarg.

This species has often been confounded with C. mollis, but the two species have separate native ranges except for an area of overlap in northeastern Ohio.[2]


Images



References


Media related to Crataegus pennsylvanica at Wikimedia Commons

  1. Phipps, J.B. (2015), "Crataegus pennsylvanica Ashe", 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 (eds.), Magnoliophyta: Picramniaceae to Rosaceae, Flora of North America North of Mexico, vol. 9, New York, Oxford: Oxford University Press, p. 557
  2. Phipps, J.B.; O’Kennon, R.J.; Lance, R.W. (2003). Hawthorns and medlars. Cambridge, U.K.: Royal Horticultural Society. ISBN 0881925918.


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