KEY TO THE GENERA. XXXV11 



/ Plant minute, on stone ; leaves subulate, smooth 13. Seligeria 



"\ Leaves lanceolate or linear, usually papillose 10 



/Seta lateral ; Is. strongly keeled, acute, nerve vanishing 47. Ancectangium 



\Seta terminal 42. Weisia 



H. Capsule with apophysis as wide as op wider than 



itself. 



/Leaves with long, narrow, subulate points .54. Tetraplodon 



I Leaves obtuse, or with shorter points .Jj. Splachnum 



I. Capsule striate, regularly furrowed when dry 

 (acrocarpous). 



{Capsule on an arcuate seta 2 

 Seta straight (the capsule erect or oblique) 5 



/Leaves ovate, with long, very lax cells 61. Fmzaria 



\ Leaves lanceolate or subulate, cells narrow 3 



/Capsule subglobose ; leaves papillose 4 



-*\Capsule elongate ; leaves smooth 24. Campylopus 



{Leaves squarrose, plicate 7/. BreuUlia 

 Leaves spreading, not plicate 69. Bartramia 



/Capsule subglobose, oblique (erect in B. stricta) 6 



^\Capsule more or less oval or cylindric 8 



, /Teeth of peristome united into a cone ; branches 5-angled 68. Conostomum 



\ Teeth of peristome free 7 



/Leaves short ; branches usually whorled Jo. Philorwtis 



' \Leaves long and narrow ; branches not whorled 69. Bartramia 



„/Teeth of (outer) peristome grouped in pairs or fours 9 



\ Teeth of peristome equidistant n 



/Calyptra sub-persistent, large, mitriform, plicate, often hairy 10 



"\Calyptra soon falling, cucullate, smooth 48. Zygodon 



{Capsule much exserted, with superficial stomata ; leaves crisped when dry (except 

 U. Hutchinsi/z), basal cells very narrow 49. Ulota 

 Capsule usually less exserted, stomata immersed (except 0. speciosuni) ; Is. more 

 or less imbricate when dry, basal cells wide .30. Orthoti-ichum 



/Peristome single 12 



\ Peristome double 19 



/Peristome teeth 16, simple, or slightly and irregularly divided 13 



\Peristome teeth 16, cloven half-way or more 15 



/Capsule long, covered by calyptra ; leaves large and wide 46. Encalypta 



3 \ Capsule very short ; leaves narrow 14 



/Leaves subulate, entire, with excurrent nerve 14. Brachyodus 



^\Leaves linear or ligulate, usually toothed, nerve vanishing 77. Rhabdoweisia 



/Leaves (apparently) nerveless, large, whitish 27. Leucobryum 



-> \ Leaves single nerved 16 



, /Peristome teeth divided to base 16. Ceratodon 



\Peristome teeth divided half-way 17 



/Leaves with swollen, usually brownish, angular cells 36. Dicranum 



'\Leaves without special angular cells 18 



{Leaves crisped when dry, papillose, toothed above, cells short 

 18. Cynodontium 

 Leaves rarely crisped, smooth, cells elongate (except D. heteromalla) 

 21. Dicranella 



/Capsule with spiral striae, erect 46. Encalypta 



"\Capsule without spiral striae, cernuous 20 



TLs. coarsely toothed, cells of sheathing base long and narrow 66. Timmia 



20-j Ls. entire or finely toothed, not sheathing, basal cells little elongate 



\ 65. Aulacomnium 



a 



