Rev. Bryol. Lichénol. 39: 217. 1973.
Leaves with basal laminal cells bulging, papillose-mammillose. Seta dextrorse, smooth. Capsule 1.3–2 mm; exothecial cells not or slightly differentiated; peristome consisting of low papillose membrane. Calyptra often splitting by one cleft along one rib.
se United States, Mexico, West Indies, Central America, South America, Asia, s Africa, Pacific Islands (New Zealand), Australia
Subspecies 2 (1 in the flora).
Subspecies tenuis is Old World in distribution.