Families
- Aulacomniaceae: Aulacomnium, Hymenodontopsis, Mesochaete.
- Calomniaceae: Calomnion.
- Cyrtopodaceae: ± in Hypnodendraceae.
- Mitteniaceae: Mittenia.
- Rhizogoniaceae: Calomnion, Cryptopodium, Goniobryum, Pyrrhobryum, Rhizogonium.
- Spiridentaceae: ± in Hypnodendraceae.
Botany: Acro- or pleurocarpous. Central strand + Lvs cells rounded-hexagonal. Costa +. Di-, aut-, or synoicous Perichaetia basally in tomentum. Seta +, short or long CAP widest at ori ce. PS +/–. CY cucullate Predom. trop. mostly on forest oor.