Genera 10; 330 species; 2 subfamilies.
Clades:
Grimmiales,
Dicranidae.
Region: worldwide.
Habitat: light-loving; on limestone-free rock, few grow on mortar, in inner cities; very resistant to desiccation; some prefer sandy places; temperate zones, high mountains; in the tropics they inhabit only the high mountains.
Genera: Bucklandiella, Codriophorus, Coscinodon, Coscinodontella, Dryptodon, Grimmia, Indusiella, Jaffueliobryum, Leucoperichaetium, Racomitrium, Schistidium, Scouleria, Tridontium
BotanyMoss; grow in dense pads or also prostrate.
Leaves: mostly lanceolate; consist of two cell layers in many species; mostly with a hair-like extended chlorophyll-less leaf tip, called glass hairs, which often gives the cushions of these mosses a grey or silver shimmer, dispersing incident light
Capsule: sunken or stands on a short capsule stem; ovoid to cylindrical; sporogons are terminal or on short side shoots; peristome consists of 16 teeth.
Growth from: acrocarpous
Plant theoryThe 3 Families of
Grimmiales are fused in one
Family Grimmiaceae and placed in
Subphase 6.
GeneraGrimmiaceae: Aligrimmia, Anodon, Bucklandiella, Codriophorus, Coscinodon, Coscinodontella, Dryptodon, Gasterogrimmia, Grimmia, Guembelia, Indusiella, Jaffueliobryum, Leucoperichaetium, Niphotrichum, Orthogrimmia, Racomitrium, Schistidium, Scouleria, Streptocolea, Tridontium.
Ptychomitriaceae: Aligrimmia, Campylostelium, Indusiella, Jaffueliobryum, Ptychomitriopsis, Ptychomitrium
Seligeriaceae: Blindia, Brachydontium, Hymenolomopsis, Seligeria, Trochobryum, Valdonia
Archidiaceae: Archidium