BAENES — NORTH AMBEICAN MOSSES. 217 



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



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



Capsule blood-red or dark purple, teeth, red at base B. atropnrpareum, 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 tuffs. 



CoUum half length of sporangium . . B. erythrocarpnm, 232. 

 Collum equaling or exceeding the sporangium in 



length B. micro-erythrocarpnm, 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. hffimatocarpam, 311. 



* * Yellowish-brown. 

 Slightly incurved. 



Constricted below mouth B. meesioides, 3S6. 



Not constricted B. pallens, 237 



Symmetric. 

 Strongly constricted below mouth. 

 Steins about 1 cm. high .... B. tnrbinatnm, 238. 



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



Slightly constricted below mouth. 



Leaves long decurrent B. extennatnm, SSS. 



Leaves not decurrent or only slightly. 

 ' Leaf margin plane. 



Pale on the borders ..... B. Sawyeri, 3SS. 



Red on the borders .... B. ernbescens, 3S4. 



Leaf margins revolute. 

 Margin serrate at the apex . . B. psendotriqnetruia,^ 238. 

 Margin quite entire. 



Cilia single B. acntiuscnlnm, 381. 



Cilia 2-3 B. crassirameum, 3^9. 



c. Leaves pointed, costa vanishing. 



[S. extenuatum and S. eras sir aTnetim may be sought here.] 



Leaves distinctly margined ..... B. capillare,' 235. 



1 See Appendix, nos. 330-332. 



^ See Appendix, nos. 317, 318, 3U. 



