Monographs Details: Chroococcus minutissimus N.L.Gardner
Authority: Gardner, Nathaniel L. 1927. New Myxophyceae from Porto Rico. Mem. New York Bot. Gard. 7: 1-144. pl. 1-23.
Family:Chroococcaceae
Description:Species Description - Cells associated into families of 2-4, free among other algae, not forming a stratum alone; single cells with tegument 1-1.5 µ diam., spherical, pale aeruginous, homogeneous; families of four with tegument 4.8-5.5 µ diam.; tegument exceedingly thin, almost invisible, hyaline.

Distribution and Ecology - Growing upon other algae in a waterfall between Arecibo and Utuado, no. 1458 b, type.

Discussion:

PLATE 2, FIGURE 18

Chroococcus minutissimus is closely related to C. cubicus of this paper. It is smaller in all of its dimensions. It is to be distinguished especially by the almost complete absence of tegument.