Penstemon gracilis Nutt., var. wisconsinensis (Pennell), n. comb
Fassett, Norman C. (Norman Carter), 1900-1954
Article
1947
Rhodora
49
293--293
BioStor
[Cambridge, Mass., etc.] New England Botanical Club [etc.]
BioStor: https://biostor.org/reference/139537
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