Crataegus in the northeastern and central United States and adjacent Canada
@article{Palmer2008CrataegusIT, title={Crataegus in the northeastern and central United States and adjacent Canada}, author={E. J. Palmer}, journal={Brittonia}, year={2008}, volume={5}, pages={471-490} }
In the preparation of a revised treatment of the genus Crcataegus in the northeastern United States and adjacent Canada, to be published soon, it has been found necessary to propose a new specific name to replace one invalidated by all earlier homonym and to change the status of a number of names from species to varieties or forms. And in treating the species under a broader concept than that of the original authors, many names are placed in synonymy. This more conservative treatment of the… CONTINUE READING
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