Crataegus Ser. Tenuifoliae
Series ''Tenuifoliae'' is a series (botany), 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 (Crataegus wootoniana, ''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 (biology), hybrid derivatives of series ''Tenuifoliae'': * Crataegus × fretalis, ''Crataegus'' × ''fretalis'' * Crataegus × lucorum, ''Crataegus'' × ''lucorum'' References

Crataegus, Tenuifoliae Flora of Northern America Plant series Taxa named by Alfred Rehder {{Crataegus-stub ...
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Crataegus Macrosperma
''Crataegus macrosperma'', the bigfruit hawthorn is a species of hawthorn Hawthorn or Hawthorns may refer to: Plants * '' Crataegus'' (hawthorn), a large genus of shrubs and trees in the family Rosaceae * ''Rhaphiolepis'' (hawthorn), a genus of about 15 species of evergreen shrubs and small trees in the family Rosace ... native to most of the eastern United States and adjacent Canada, though uncommon at lower altitudes in the south. It is sometimes misidentified as ''C. flabellata''. It is one of the earliest hawthorns to bloom in spring. References macrosperma Trees of the Southeastern United States Flora of North America {{Crataegus-stub ...
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