Subspecies and variety
Fosberg, F. Raymond (Francis Raymond), 1908-1993
Article
1942
Rhodora
44
153--157
BioStor
[Cambridge, Mass., etc.], New England Botanical Club [etc.],
BioStor: https://biostor.org/reference/137891
In copyright. Digitized with the permission of the rights holder.
https://biodiversitylibrary.org/permissions
http://creativecommons.org/licenses/by-nc-sa/3.0/
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