Sanionia

Autoicous. Asexual propagules absent. Tufts or mats on soil, logs or tree bases. Stems creeping or ascending to erect, irregularly or pinnately branched ± in one plane or rarely simple, with sparse rhizoids at or just below leaf insertions; paraphyllia absent; pseudoparaphyllia foliose; central strand present. Leaves lanceolate, circinate, falcate or almost straight, mostly falcate-secund when moist, not or scarcely altered when dry, strongly to weakly plicate, not or scarcely decurrent, branch leaves smaller than stem leaves often with a reduced alar group otherwise similar; apices acuminate to very long-acuminate; costa single, ending in acumen; margins denticulate or serrate (not in Victoria) throughout, or entire near base, plane near base, slightly recurved toward apex, without a border; laminal cells linear, shorter and broader at base, smooth, unistratose; alar cells clearly differentiated, inflated, quadrate to rectangular, hyaline, sharply delimited or not (not in Victoria), forming a transversely triangular or ±isodiametric (not in Victoria) group. Capsules erect to pendent, curved or straight, cylindric, with an annulus. Calyptra cucullate, smooth, glabrous. Opercula conic or conic-apiculate. Peristome double; exostome of 16 well developed entire teeth or reduced (not in Victoria); endostome of 16 well-developed alternating segments the same height as the exostome teeth or reduced (not in Victoria), with a high or low (not in Victoria) basal membrane; cilia well-developed, rudimentary (not in Victoria) or absent (not in Victoria).