Monographs Details: Fissidens saprophilus Broth.
Authority: Pursell, Ronald A. 2007. Fissidentaceae. Fl. Neotrop. Monogr. 101 (Published by NYBG Press)
Description:Species Description - Plants pale green. Stems monomorphic, unbranched, to 5 mm long x 2 mm wide; rhizoids basal, smooth, reddish; axillary hyaline nodules present; epidermis and outer tier of cortical cells small, in-crassate; pigmented; inner cortical cells larger, thin-walled, hyaline; central strand absent. Leaves somewhat crispate when dry, as many as 12 pairs, ovate to oblong, ± obtuse-rounded, mucronate, to 1.8 mm long x 0.4 mm wide, perichaetial leaves largest; margin crenulate-serrulate, often ± entire on vaginant laminae, elimbate; costa ending in the muero, bry-oides type; dorsal lamina narrowed, often ± rounded, not decurrent; vaginant laminae of cauline leaves 1/2-2/3 leaf length, acute, ± equal; laminal cells distinct, eguttulate, unistratose, firm-walled, mammillose, irregularly quadrate to hexagonal, 8-11 µm long, enlarged, quadrate to oblong, smooth, in proximal parts of vaginant laminae, to 40 µm long x l4 µm wide. Monoicous (gonioautoicous); perigonia gemmiform, axillary; perichaetia terminal on stems. Sporophytes 1 per perichaetium, yellow, darkening with age; seta smooth, 3.5-4.5 long; theca exserted, erect, radially symmetric, 0.6-0.7 mm long, stomatose, exothecial cells mostly oblong, collenchymatous; peristome scariosus type; operculum conic, long-rostrate, 0.5 mm long. Spores smooth, 12-14 µm diam. Calyptra cucullate, smooth, 0.4 mm long, covering only the rostrum.

Discussion:Fissidens saprophilus is characterized by its elimbate, ovate-oblong, mucronate leaves, and mammillose laminal cells. This species is close to F. spurio-limbatus. However, its larger size, and ovate to oblong, elimbate leaves will distinguish it from the smaller F. spurio-limbatus which has lanceolate leaves, an excurrent costa, and oblate marginal cells.
Distribution:Distrito Federal Brazil South America| Paraná Brazil South America| São Paulo Brazil South America| Alto Paraná Paraguay South America|