The Genus Isoetes
Engelmann, George, 1809-1884
Article
1882
Botanical gazette
7
Issue: 5
52--54
BioStor
English
Hanover, Ind, [publisher not identified], 1876-1991
BioStor: https://biostor.org/reference/209911 DOI: https://doi.org/10.1086/325589