Monographs Details: Chamaesiphon 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.
Family:Chamaesiphonaceae
Description:Species Description - Filaments cylindrical, rounded at the outer end, 6-8 µ long, 2.3-2.5 µ diam., mostly solitary; contents of cells pale aeruginous ; walls of gonidangia very thin and evanescent.

Distribution and Ecology - Growing on filamentous green algae, in a ditch by Hot Springs, Coamo Springs, no. 396, type; about four kilometers north of Mayagüez, no. 1323 x.

Discussion:

PLATE 7, FIGURE 61

The size and shape of this species would seem to relate it to Chamaesiphon minimus Schmidle. It is nearly twice as large in all of its dimensions.