Two species of Vannella from a freshwater pond were cultured in distilled water, alfalfa, rice medium and described. Both species had a cyst form, radiate form, and trophic form. One, Vannella multimorpha sp. nov., was distinct in that large uni- and bi-nucleated Vannella were formed during the life cycle. From the large trophic Vannella multimorpha small amoebae buds were developed. Illustrations of the life cycle and microphotographs of this new species are represented.
Proceedings of the Iowa Academy of Science
©1968 Iowa Academy of Science, Inc.
Mote, Robert F.
"A Comparison of Two Vannella Species,"
Proceedings of the Iowa Academy of Science, 75(1), 381-389.
Available at: https://scholarworks.uni.edu/pias/vol75/iss1/51