Fissidens leptocladus

Asexual propagules absent. Mats on soil or rocks. Stems 5–20 mm long, simple or occasionally branched, central strand present, with rhizoids at shoot and branch bases. Leaves linear-lanceolate, lanceolate or oblong-ovate, ±falcate, strongly falcate-decurved or secund and often crisped when dry, 1–1.75 mm long, perchaetial leaves to 2 mm long, ±undulate; costa subpercurrent to occasionally percurrent; apex acute to narrowly acuminate. Apical and dorsal laminae with entire margins, with several marginal rows of thick-walled narrow cells forming a distinct border except at apex, sometimes at base or occasionally less extensive; cells away from margins ±isodiametric, quadrate to hexagonal, c. 5–9 μm wide, smooth. Vaginant laminae up to 1/2–2/3 leaf length, closed, with several marginal rows of thick-walled narrow cells forming a distinct border in basal half, or occasionally weak or absent. Dioicous. Seta 2.5–6 mm long, straw-coloured to orange-brown. Capsule oblong or ovate, inclined, straight; theca 0.5–1 mm long. Calyptra smooth, cucullate. Operculum obliquely rostrate from a conic base, c. 0.5 mm long. Peristome teeth bifid.