Mag. Encycl. 5: 323. 1804.
Leaves loosely erect to erect-spreading, not 3-ranked, narrowly oblong; margins plane; laminal cells oblong-rhombic to oblong-hexagonal, surface not bulging, smooth, walls thin, lax; basal cells same size as distal cells.
North America, Europe, Asia.
Amblyodon is characteristically found in calcareous fens and meadows.