Monographs Details: Anabaena portoricensis 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 - Trichomes 7-8 µ diam.; cells dolioform to compressed-spherical, pale aeruginous; apical cells subspherical to blunt-conical, usually smaller than the others of the trichome; heterocysts spherical, 10 µ diam.; spores broadly ellipsoidal, 10 µ diam., about 15 n long, contiguous to the heterocysts.

Distribution and Ecology - Growing in a ditch near Ponce, no. 1670 b, type.

Discussion:PLATE 12, FIGURE 14