BARNES — NORTH AMERICAN MOSSES. 213 



Inflorescence dioicoua. 

 Leaves with plane or slightly curved borders. 

 Antheridia in the axils of the perigonial leaves. 

 Upper leaves lance linear (1 : 8-50) seta 3-4 cm. W. sptaagnicola, 219. 

 Upper leaves lanceolate (1 : 4-5) seta 1-2 cm. W. gracilis, «75. 



Antheridia in a terminal cluster . . W. Lescuriana, 221. 



lieaves with mostly revolute borders. 

 Costa vanishing below apex. 

 Leaves of sterile shoots ovate, obtuse; comal leaves 



broad pointed, margin entire . . W. Ludwigii, S74. 



Leaves narrow, linear lanceolate, sharp pointed, 

 plainly toothed near the apex. 

 Seta twisted to right, membrane of the inner peristome 

 J^ length of teeth, capsule oval, short necked. 

 Annulus revoluble, costa red . . \Y. Columbica, S79. 



Annulus remaining attached to lid, costa green W. pulchella, 222. 

 Seta twisted to left, membrane % length of teeth, 



capsule pyriform, longer necked . W. commutata, 220. 

 ■Costa reaching the apex. 



Capsule oval, long necked, leaves serrate at apex W . annotina, 219. 

 Capsule obovate, short-necked, leaves denticulate 



above W. pycnodecnrrens, ;?77. 



B. Annulus none. 



Leaves nearly entire, cilia very short . . W. Drnmmondii, 219. 



Leaves nearly entire, cilia 3 W. Bigelovii, 223. 



Leaves sharply serrate. 



Stem red, leaves glaucous-green .... W. albicans, ' 222. 



Stem and leaves green W. carnea, 221. 



[ W. pulchella may be sought here.l 



A number of species have been described from sterile and immature 

 specimens, whence it is impossible to determine their place in the key. 

 They are W. longibraoteata Broth., 268; W. mioroapioulata C. M. & 

 Kindb., 281; W. polymorphoides Kindb., 266; W. microcaulon C. M. & 

 Kindb., 272; W-suhoucullataCM. & Kindb., 273; W. mierodentiou- 

 lata 0. M. & Kindb., 276. The first two are sterile, the remaining four 

 are immature. The numbers attached refer to corresponding descriptions 

 in the Appendix. 



1 See Appendix, no. 280. 



