Crataegus flabellata

Crataegus flabellata is a species of hawthorn known by the common name fanleaf hawthorn. It is native to the northeastern United States and adjacent Canada. It is intermediate in appearance between C. macrosperma and C. chrysocarpa.[2] C. macrosperma, which occurs throughout the range of C. flabellata and also in the southeastern U.S., is often misidentified as C. flabellata.[2]

Fanleaf hawthorn
Crataegus flabellata var. grayana
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. Tenuifoliae
Species:
C. flabellata
Binomial name
Crataegus flabellata
Synonyms[1]
  • C. crudelis Sarg.
  • C. coccinea var. flabellata (Bosc ex Spach) Britton
  • C. densiflora Sarg. nom. illeg.
  • C. grayana Eggl.
  • Mespilus flabellata Bosc ex Spach

Varieties

Crataegus crudelis Sarg. is a form of C. flabellata from Quebec that has very long thorns (up to 10 cm).[1] The two varieties C. flabellata var. grayana (Eggl.) E.J. Palmer and C. flabellata, var. flabellata differ in that the first has 20 stamens per flower, and the latter has 10 stamens, but in other features the two varieties are variable and the features overlap.[1]

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References
  1. Phipps, J.B. (2015), "Crataegus flabellata (Boxc ex Spach) K. Koch", 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, 9, New York, Oxford: Oxford University Press, pp. 567–567
  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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