Monographs Details: Scytonema javanicum var. pallidum 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 flexuous, 9.5-12.5 µ diam., densely intertwined, forming a flocculent stratum; trichomes not constricted, 7-9 µ diam.; cells cylindrical throughout the trichome, quadrate to slightly greater or less than the diameter, pale grayish or aeruginous; sheath thin, membranaceous, hyaline at the apices, brown below.

Distribution and Ecology - Growing on serpentine rock near Mayagiiez, no. 899 a, type.