Monographs Details: Anacystis microsphaeria 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:Microcystaceae
Description:Species Description - Colonies spherical to slightly irregular in outline, some specimens being cubical with rounded corners, free, 20-35 p diam.; cells spherical to decidedly angular after division, or remaining angular to maturity, 3-3.5 µ diam., pale aeruginous, closely aggregated; resting spores angular, fitting close together in the colony, with a thin, firm, membranaceous, smooth, brown wall, 5.8 µ diam.; tegument firm on the margin, more or less lamellose, yellowish to dark brown.

Distribution and Ecology - Growing among other Myxophyceae on a wall at Coamo Springs, no. 299 a, type.

Discussion:

PLATE 4, FIGURE 39

The above is a small species distinguished by its relatively large, brown, smooth-walled resting spores combined with its tough, close-fitting, lamellose, colonial tegument.