Autoicous. Mats on wet soil, rocks, logs, tree bases and aquatic, yellow- to bright-green, sometimes black in submerged forms. Stems irregularly and loosely branched, complanate, 6–20 cm long. Leaves wide-spreading, ± twisted longitudinally when dry, distinctly (especially in branches) or moderately complanate, narrowly to broadly ovate-lanceolate, (2–) 2.5–3.5 (–6) mm long, plane; apex narrowly acuminate or shortly acute; costa extending c. 1/2–2/3 leaf length; margins entire; laminal cells in apical half linear-rhomboidal, (30–) 40–120 μm long, 7–13 μm wide, becoming shorter and wider toward base; alar cells not or very weakly differentiated from adjacent cells, rectangular or subquadrate. Seta 8–26 mm long, longer in submerged forms, red, smooth. Capsule short-cylindric, strongly curved, c. 2.5 mm long, brown to reddish. Operculum conic.
GleP, VVP, GipP, WaP, Gold, CVU, EGL, HSF, Strz, MonT. In creeks and lakes throughout southern Victoria. Also WA, SA, QLD, NSW, ACT and Tas. Worldwide except Antarctica.
