Apocynum sibiricum var. cordigerum in New England
Weatherby, Charles Alfred, 1875-1949
Article
1942
Rhodora
44
331--332
BioStor
[Cambridge, Mass., etc.], New England Botanical Club [etc.],
BioStor: https://biostor.org/reference/180125
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http://creativecommons.org/licenses/by-nc-sa/3.0/
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