Andreaea alpina Hedw.

Stems 1-6(-8) cm long. Leaves panduriform, mostly 0.4-0.5 mm wide, widest in mid-leaf, 2-2.5 times as long as wide; blade straight, usually not secund, sometimes flexuose; apex usually inflexed or plane, acute, not rounded, with a ±abrupt broad terminal triangular area occupying 25-33(-50)% of the length of the leaf; sinus strongly contracted; margin incurved to plane, proximally crenate or toothed (1 or 2 most proximal cells sometimes entire); base distinctly sheathing; costa absent; laminal cells heterogeneous, distally smooth (or slightly bulging), locally bistratose or unistratose, proximally marginally mostly rectangular, mostly oblique.Perigonial paraphyses present. Perichaetial bracts convolute and sheathing. Capsule base shorter than valves. Turgid spores 26-58 µm diam.; shrivelled spores 17-48 µm diam.