Key to Genera

Veil.--Hood-like, spore-case symmetrical or nearly so; leaves wavy and crisp when dry, lamellae few (2 to 8), straight, teeth 32 . . . . .Catharinea.

Veil.--Mitrate, densely hairy.

Spore-case not angular, teeth often 32 . . . Pogonatum.

Spore-case 4-to 6-angled, teeth 64 . . . . Polytrichum.