Analytic Key to the Genera of Mosses. 
17 
= = Calyptra not plicate. 
Aquatic, floating. 
Leaves distichous.Conomitrium, 89. 34. 
Leaves pluriseriate. Ciuclidotus, 134. 
Terrestrial. 
Very small, gregarious. 
Teeth broad, erose-truncate, hyaline . . Bracliyodus, 98. 
Teeth linear-lanceolate, deeply bifid . Campylostelium, 99. 
Larger, above 1 cm. in height. 
Leaf-cells small, quadrate or punctate, obscure. 
Beak long-clavate.Encalypta, 180. 50. 
Beak long or short, not clavate. 
Teeth lanceolate, flat, subentire or crib- 
rose or 2—3-fid to the middle . Grimmia, 134. 43. 
Teeth linear-lanceolate, 2—3-fid to below 
the middle, or cleft to the base into 
filiform segments . . . Rliacomitrium, 147. 45. 
Leaf-cells large, very distinct, pedicel with a 
prominent apophysis. 
Apophysis smaller than the capsule. 
Leaves entire, obtuse . 
Leaves serrate, acute or acuminate 
Apophysis exceeding the capsule 
-j-f- -e-e- Teeth sixteen , calyptra cucullate. 
— Leaves distichous. 
Leaves subulate. 
Leaves broader, with a prominent vertical wing 
= == Leaves pluriseriate. 
17 Capsule unsymmetric, cernuous-inclined or arcuate. 
Teeth filiform-bifid from a membranous base . Desmatodon, 110. 38. 
Teeth irregularly lacerate or bifid to the middle or below. 
Leaf cells not enlarged at the basal angles, roundish 
or quadrate above. 
Lid long-beaked, leaves serrulate, peristome equal¬ 
ing half the capsule .... Dichodontium, 61. 30. 
Lid long-beaked, leaves crenulate or denticulate, 
peristome shorter.Cynodontimn, 59. 30. 
Lid short-beaked.Oreoweisia, 58. 
Leaf-cells not enlarged at the basal angles, oblong 
above, rectangular at base . . . Dicranella, 64. 30. 
2—A. & L. 
Dissodon, 189. 51. 
Tayloria, 190. 51. 
Splaclmum, 193. 51. 
Distichium, 93. 36. 
Eissidens, 81. 34. 
