Stems 10-20 mm long. Leaves ±panduriform, 0.25-0.40 mm wide, equally wide in base and mid-leaf, 2-3 times as long as wide; blade rarely falcate, usually not secund, not flexuose; apex mostly slightly reflexed, narrowly acute or acuminate, not rounded, often with a ±abrupt terminal triangular area occupying a quarter (rarely more) of the length of the leaf; sinus strongly contracted; margin incurved, usually proximally crenate or toothed; base distinctly sheathing; costa absent; laminal cells heterogeneous, distally papillose and unistratose, proximally marginally mostly rectangular, often mostly oblique. Perigonial paraphyses absent. Perichaetial bracts convolute and sheathing. Capsule base shorter than valves. Turgid spores 16-25 µm diam.; shrivelled spores (14-) 16-21 µm diam.
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