Monographs Details: Calothrix braunii var. contorta N.L.Gardner
Authority: Gardner, Nathaniel L. 1927. New Myxophyceae from Porto Rico. Mem. New York Bot. Gard. 7: 1-144. pl. 1-23.
Description:Species Description - Filaments very much contorted, 500-800 µ long; trichomes torulose at the base and 6-7.5 µ diam., cylindrical above and 2.5-3 µ diam.

Distribution and Ecology - Growing on the wall of a house in Maricao, no. 1049, type.