164 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



Leaves sub-tubulose at apex, lamellae undulate or 



numerous . .. . . , . Oligotrichum, 258. 222. 

 Calyptra cucullate, capsule unsymmetric, arcuate in- 

 curved . . . . . w . Psilopilum, 259. 

 Calyptra mitrate, densely hairy. 



Capsule not angular, teeth 32 .. . . . Pogonatum, 260. 222. 



Capsule 46 angled, teeth 64 . . . . Polytrichum, 263. 223. 



* * Peristome double. 

 -i Capsule symmetric, erect (sometimes inclined in age). 



Teeth almost 0, imperfect or rudimentary . Macromitrium, 178. 206. 

 Teeth perfect, linear or filiform. 

 Capsule smooth. 



Teeth revolute Schlotheimia, 179. 



Teeth not revolute. 



Leaves ecostate Fontinalis, 268. 224. 



Leaves costate. 

 Leaf-cells oval hexagonal, capsule long 



exserted Leptotheca, 251. 



Leaf-cells hexagonal-rhombic, capsule immersed Brachelyma. 1 

 Leaf -cells linear-attenuate, capsule immersed 



or emergent Dichelyma, 272. 225. 



Capsule ribbed and twisted. 



Costa with loose cells in center of section . Encalypta, 180. 206. 

 Costa with central stereide band . . . Merceya, 8 242. 

 Teeth broadly or narrowly triangular-lanceolate, pale, 



capsule ribbed, not twisted. 



Leaf-cells at base linear, chlorophyllose . . . Ulota, 160. 202. 

 Leaf-cells at base hexagono-rectangular, hyaline. 



Lid straight, conical or acuminate . Orthotrichum, 164. 203. 

 Lid obliquely rostrate , , . Zygodon, 206. 201. 



*- Capsule unsymmetric, inclined or oblique or pendulous. 

 H- Inner peristome a plaited cone. (-M- -H- on p. 165.) 



Pedicel thick, red, densely verrucose . . Buxbaumia, 267. 223. 

 Pedicel very short, almost none .... Diphyscium, 266. 



i Including one species, B, subulatum Sch. (Dichelyma subulatum Myrin ; Cryphcea 

 i nundata Nees. L. and J. Manual, pp. 274 and 413.) 

 8 See f ootnotelp. 159. 



