Ptychomitriopsis aloinoides Magill

Plants small, loosely caespitose, green to yellow-green; saxicolous. Stems 2-4 mm tall, rarely branched; in section round, central strand small, inner cortical cells in 2 or 3 rows, large, thin-walled, outer cortical cells in 1 or 2 rows, smaller, thin-walled, brownish. Leaves ± crowded, erect-spreading wet, incurved and appressed dry; bistratose above base; oblong to lingulate, 1.0-1.5 mm long; obtuse to rounded; base scarcely differentiated; margins entire, plane to erect below, broadly involute above. Costa ending below apex to subpercurrent; in section elliptical, guide cells 4, distinct, ventral stereid band small, 2 cells thick, ventral surface cells similar to ventral laminal cells, forming a continuous ventral layer, dorsal stereid band strong, (2)3 or 4 cells thick, dorsal surface cells small, incrassate but more strongly thickened on outer wall. Upper laminal cells rounded-quadrate to transversely rectangular (7-)11-14 µm, smooth; basal cells somewhat larger, short-rectangular, thin-walled, hyaline. Autoicous. Perichaetia terminal, leaves not differentiated. Seta 2.0-3.5 mm long, yellowish to brownish. Capsule ellipsoidal, 1.0-1.2 mm long, brownish; annulus present, red. Peristome teeth 0.14 mm high, cleft and perforated, reddish yellow. Operculum rostrate, 0.7 mm long. Calyptra mitrate, 1.0-1.5 mm long. Spores rounded to ± angular, 9-13 µm, essentially smooth, light green to yellowish.