Comparisons of sexual and apogamous races in the fern genus Pellaea
Tryon, Alice F. Britton, Donald M. 1923-2012
Article
1958
Rhodora
70
1--24
BioStor
[Cambridge, Mass., etc.], New England Botanical Club [etc.],
BioStor: https://biostor.org/reference/138175
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http://creativecommons.org/licenses/by-nc-sa/3.0/
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