BARNES NORTH AMERICAN MOSSES. 217 



b. Leaves pointed, costa percurrent or excurrent. (c) 



i. Capsule short (1:2), abrupt at base. 



Capsule blood-red or dark purple, teeth red at base B. atropurpureum, 232. 

 Capsule pale, teeth pale throughout . . B. microglobnm, 307. 



ii. Capsule longer (1: S-\-), tapering at base. 



* Blood red to dark purple. 



Plants short (5-15 mm.) in small lax, yellowish-green tufts. 

 Collum half length of sporangium . . B. erythrocarpum, 232. 

 Collum equaling or exceeding the sporangium in 



length . . . . . B. micro-erythrocarpum, 308. 

 Plants larger (3-5 cm.), in large tufts. 



Tufts shining red or purplish B. alpinnm, 233. 

 Tufts greenish, costa yellow, percurrent or excur- 

 rent B. haematocarpum, 311. 



* * Yellowish-brown. 

 Slightly incurved. 

 Constricted below mouth . . . . . B. meesioides, 336. 



Not constricted . . . . . . . B. pal lens, 237 



Symmetric. 



Strongly constricted below mouth. 



Stems about 1 cm. high . . * . B. turbinatum, 238. 

 Stems 4-10 cm. high . . .... B. Schleicheri, 239. 



Slightly constricted below mouth. 



Leaves long decurrent B. extennatnm, 323. 



Leaves not decurrent or only slightly. 

 Leaf margin plane. 



Pale on the borders . .- . . B. Sawyeri, 822. 



Red on the borders .... B. erubescens, 324. 



Leaf margins re volute. 



Margin serrate at the apex . . B. psendotriquetrnm, 1 238. 

 Margin quite entire. 



Cilia single B. acntinscnlnm, 321. 



Cilia 2-3 B. crassirameum, 329. 



c. Leaves pointed, costa vanishing. 



[B. extenuatum and B. crassirameum may be sought here.] 



Leaves distinctly margined B. capillare, 8 235. 



1 See Appendix, nos. 330-332. 



2 See Appendix, nos. 317, 318, 344. 



