Fissidens rufescens Hornsch.

Plants small to medium, scattered or forming loose groups, dark green to yellow-green; terricolous. Stems 4-8 mm high, simple; in section elliptical, central strand present, inner cortical cells large, outer cortical cells in 2 rows, stereids to substereids. Leaves ± crowded, compressed or weakly contorted dry, erect-spreading wet; ligulate to elliptical or frequently asymmetrical, broadly ovate-ligulate 0.5-1.8 mm long; apex acute, cuspidate; margins serrulate at apex, entire below or occasionally serrulate on vaginant laminae, limbidia present on all laminae, strong or weak, confluent with costa or ending a few cells below apex and ending above insertion on dorsal lamina, submarginal to inter-marginal by 1-8 cells, on proximal vaginant laminae, occassionally spurred; costa short-excurrent. Vaginant laminae open to closed, to ? of leaf length; termination of one blade submarginal to laminal or almost at costa; dorsal lamina gradually tapering proximally, just reaching insertion or weakly decurrent, rarely rounded to insertion. Laminal cells rounded, quadrate to subhexagonal, 4-6 µm long, weakly thickened, mammillose to bulging, smooth. Perichaetia terminal; leaves elongate, asymmetrically ovate-ligulate, 2.0-2.5 mm long. Seta 5-7 mm long, yellowish; capsule inclined to horizontal, urn ± asymmetrical, curved, 0.8-1.0 mm long, yellow-brown; exothecial cells quadrate, longitudinal walls thickened; peristome deeply cleft, reddish; operculum rostrate; spores round, 15-18 µm, weakly papillose.