Dioicous. Loose wefts, yellow- or brown-green. Stems distichously and subpinnately branched, commonly c. 50 mm long, brown, with sparse red-brown rhizoids. Leaves falcate-secund, ovate-lanceolate, (1.3–) 2.5 mm long, 0.75 mm wide, plane to inrolled near margins; apex shortly acuminate; costa ill-defined, mostly reaching mid leaf or slightly beyond; margins entire, plane or inrolled, without a border; midlaminal cells vermicular, c. 30–51 μm long, 2.5–4 μm wide, smooth, becoming wider, to 12 μm wide, toward base; alar cells strongly inflated, hyaline to yellow-brown, forming a clearly differentiated triangular and auriculate group extending 2/3 of the way to the costa. Seta 6–60 mm long, yellow to orange, smooth. Capsule horizontal, cylindric, curved, 1.5–2.5 mm long.
GleP, Brid, VVP, GipP, OtP, WaP, Gold, CVU, DunT, EGL, HSF, MonT, VAlp. In streams, swamps and pools throughout southern Victoria and in the Victorian Alps. Also WA, SA, NSW, ACT, Tas, and Macquarie and Heard Islands. Worldwide except Antarctica.
