One of the common aquatic plants of our Iowa lakes is Heteranthera dubia (Jacq.) MacM. In the lakes of the Okoboji region this form is conspicuous along sheltered shores of suitable depth. While only sparingly present on the more exposed margins of the larger bodies of water it grows luxuriantly in the shallower bays and associated smaller lakes. In waters of appropriate depth considerable areas are often dominated by this form, sometimes to the exclusion of other large plants. During the summer of 1910 many acres of the "long slough" south of Center Lake were occupied almost exclusively by this species. Portions of the upper end of East Okoboji Lake were occupied this past summer by extensive beds of this plant where for a number of years it had developed but scantily owing to the higher water level. The writer desires in this brief article to call attention to the apparently uniform cleistogamy of this plant in such habitats.
Proceedings of the Iowa Academy of Science
©1912 Iowa Academy of Science, Inc.
Wylie, Robert B.
"Notes on Heteranthera dubia,"
Proceedings of the Iowa Academy of Science, 19(1), 131-132.
Available at: https://scholarworks.uni.edu/pias/vol19/iss1/21