Crataegus flabellata

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Crataegus flabellata
File:Crataegus flabellata.jpg
C. flabellata var. grayana
Scientific classification
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C. flabellata
Binomial name
Crataegus flabellata
Synonyms[2]

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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.[3] C. macrosperma, which occurs throughout the range of C. flabellata and also in the southeastern U.S., is often misidentified as C. flabellata.[3]

Varieties

Crataegus crudelis Sarg. is a form of C. flabellata from Quebec that has very long thorns (up to 10 cm).[2] 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.[2]

References and external links

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  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.
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  3. 3.0 3.1 Phipps, J.B., O’Kennon, R.J., Lance, R.W. (2003). Hawthorns and medlars. Royal Horticultural Society, Cambridge, U.K.