Fragm. Florist. Geobot.41: 1035. 1996 ,
North America, Europe.
Species ca. 2 (1 in the flora).
The calyptra of Cleistocarpidium is 4-lobed, often with a deep indention on one side. The cryptoporic stomata are confined to the proximal half of the capsule, but not restricted to the extreme base as is the case with Pleuridium. The pale, ovoid capsule may be slightly asymmetric. This genus includes Sporledera in the sense of European authors but not of Hampe.