Monograph of the Isoetaceae
Pfeiffer, Norma Etta.
Article
1922
Annals of the Missouri Botanical Garden
9
79--233
BioStor
English
St. Louis, Missouri Botanical Garden Press, 1914-
BioStor: https://biostor.org/reference/11478 DOI: https://doi.org/10.2307/2990000