Dicranodontium

• Authority

  Frahm, Jan-Peter. 1991. Dicranaceae: Campylopodioideae, Paraleucobryoideae. Fl. Neotrop. Monogr. 54: 1-238. (Published by NYBG Press)

• Family

  Dicranaceae

• Scientific Name

  Dicranodontium

• Type

  Type species D. longirostre (Weber & Mohr) Bruch, Schimper & Gümbel.

• Synonyms

  Dicranodontium longirostre (F.Weber & D.Mohr) Bruch & Schimp.

• Description

  
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  Genus Description - Plants in soft tufts. Leaves narrowly lanceolate, channelled, ending in a long, slender, often serrate subula. Costa filling about of the leaf base, excurrent, filling the subula, in transverse section with a median band of deuter cells and multicellular layers of ventral and dorsal stereids. Alar cells inflated, hyaline or reddish. Basal laminal cells rectangular, narrower at margins. Upper laminal cells elongate rectangular, narrow, often porose. Seta cygneous in immature sporophytes, straight and twisted in mature sporophytes. Capsule ovoid to short cylindrical, symmetric. Operculum longly rostrate, as long as the capsule. Peristome teetn 16, split, vertically striate below, papillose above. Annulus lacking. Spores 13-15 µm in diam., finely papillose. Calyptra entire or fringed at base. This genus is most closely related to Atractylocarpus, from which it differs by longer upper laminal cells, more incrassate basal laminal cells and especially a cygneous seta with shorter capsule. Dicranodontium is confined to montane forests whereas Atractylocarpus is alpine.