KEY TO THE GENERA. XXXIX 



L Capsule inclined op on an arcuate seta, with single 

 peristome (acrocarpous). 



/Seta bent or curved downwards when moist 2 



\Seta straight (except where it joins the capsule) 5 



/Ls. with large inflated auricles, and long fine points 25. Dicranodontium 



\ Ls. not auricled 3 



/Plant tall ; nerve 2-winged at back 2g. Grimmia 



^\ Plant very small ; nerve not winged 4 



{Nerve vanishing ; peristome teeth narrow, usually cloven 34. Campylostelium 

 Nerve excurrent ; peristome teeth lanceolate, usually entire 13. Seligeria 



/Capsule sub-globose, horizontal 6 



-• \ Capsule not globose 7 



, /Plant almost stemless, with minute nerveless leaves .56. Discelium 



\ Stem bearing numerous nerved leaves j capsule very small 67. Catoscoiium 



/Leaves with angular cells enlarged, usually brownish 26. Dicranum 



' \Leaves without special angular cells 8 



o /Capsule with neck as long as itself 20. Trematodon 



\ Capsule without elongated neck 9 



{Ls. with upper cells elongate, smooth 21. Dicranella 

 V 

 /Leaves smooth ; capsule strumose 18. Cynodontium 



^Upper cells more or less quadrate, scarcely elongate 10 



\ Leaves papillose ; capsule not strumose ig. Dichodontium 



M. Capsule inclined op pendulous, with double 

 peristome (acrocarpous) 



{Plant almost stemless, with minute nerveless leaves 7. Buxbaumia 

 Leaves nerved 2 



{Leaves linear-setaceous ; plant small 3 

 Leaves not setaceous 4 



/Capsule inclined, clavate 7J. Orthodontium 



3\ Capsule pendulous, pyriform 74. Leptobryum 



/Outer peristome much shorter than inner ; ls. Ungulate 5 



4\Outer peristome equalling inner 6 



/Leaves acute, cells lax 62. Amblyodon 



' \ Leaves obtuse, cells narrow 6j. Meesia 



,/Cells truncate-hexagonal, lax ; peristome curved spirally 61. Funaria 



\Cells pointed or roundish ; peristome not curved 7 



/Capsule very long-necked, mouth very oblique 76. Plagiobryum 



^\Capsule short-necked, or long-necked and regular 8 



o/Leaves entire, obtuse (or sub-acute at most) 9 



\Leaves acute or acuminate, or less acute and serrate 10 



/Leaves large, over inline, roundish 78. Mnium 



9 \Leaves small, under 1 line 77- Bryum 



/Upper cells large, roundish-hexagonal; ls. large 78. Mnium 



I0 \TJpper cells elongate, hexagonal-rhomboid II 



/Cilia without appendages, nerve not excurrent, rarely reaching apex... 75. Webera 

 1 1 \Plants with either appendiculate cilia, or excurrent nerve 77. Bryum 



N. Capsule erect, pleuroearpous (leaves nerved). 



/Seta rough; ls. narrow, tapering, plicate 108. Pleuropus 



: \Seta smooth 2 



/Leaves papillose 3 



\ Leaves smooth 6 



iv 



