Analytic Keys to the Species of Mosses. 
57 
1). Leaves pointed, costa percurrent or excurrent. 
i. Capsule short (1:2) abrupt at base . . . B. atropiirpureuni, 22. 
ii. Capsule longer (1:8 + ) tapering at base. 
* Blood red to dark purple. 
Plant short (5-15 mm.) in small lax yellowish-green 
tufts.B. erytlirocarpujn, 21. 
Plants longer (3-5 cm.) in large compact shining red or 
purplish tufts ........ B. alpiniun, 25. 
* * Yelloivish-brown. 
Slightly incurved. 
Constricted below mouth ...... B. meesioides h 
Not constricted . . . . v . . • . B. pallens, 30. 
Symmetric. 
Strongly constricted below mouth. 
Stems about 1 cm. high.B. turbinatum, 39. 
Stems 4—10 cm. high. ..... B. Schleiclieri, 40. 
Slightly constricted below mouth. 
Leaf margins plane.B. Sawyeri 1 2 3 . 
Leaf margin revolute. 
Quite entire.B. acutiusciilum *. 
Serrate at apex ..... B. pseudotriqiietruin, 38. 
c. Leaves pointed, costa vanishing. 
Leaves closely appressed, imbricate ... B. argenteum, 29. 
Leaves sjireading, imbricate.B. capillare, 31. 
Leaves spreading, distant.B. Duvalii, 37. 
2. Costa excurrent, leaves long-cuspidate. 
a. Capsule short (1:2 or less.) 
Constricted between sporangium and collum . . B. versicolor, 24. 
Not constricted between sporangium and collum . B. coronatum, 23. 
1 Kindberg: Bull. Torr. Bot. Club, xvi (1889), 95. 
3 Renauld and Car dot: Bot. Gaz., xiv (1889), 95. 
3 Muller: Flora , 1887, 220. 
