The genus Athyrium and the North American ferns allied to Athyrium filix-femina
Butters, F. K. (Frederic King), 1878-1945
Article
1917
Rhodora
19
170--207
BioStor
[Cambridge, Mass., etc.] New England Botanical Club [etc.]
BioStor: https://biostor.org/reference/137741
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