Botanical Papers of George Engelmann
Sargent, Charles Sprague, 1841-1927
Article
1884
Botanical gazette
9
Issue: 5
69--74
BioStor
English
Hanover, Ind, [publisher not identified], 1876-1991
BioStor: https://biostor.org/reference/210033 DOI: https://doi.org/10.1086/325774