- Source: Crataegus ser. Tenuifoliae
Series Tenuifoliae is a series within the genus Crataegus that contains at least seven species of hawthorn trees and shrubs, native to Eastern North America, with one disjunct species (C. wootoniana) in the mountains of New Mexico.
Species
The principal species in the series are:
Crataegus flabellata
Crataegus schuettei
Crataegus roribacca
Crataegus fluviatilis
Crataegus iracunda
Crataegus macrosperma
Crataegus wootoniana
The following rare local species appear to be hybrid derivatives of series Tenuifoliae:
Crataegus × fretalis
Crataegus × lucorum