Analytic Keys to the Species of Mosses. 41 
II. Peristome present. 
A. Teeth straight or scarcely twisted. 
Nodose, separate. B. rigidula, 22. 
Cancellate ........ B. cancellata, 19. 
B. Teeth plainly twisted. 
1. Leaves blunt or mucronate by the excurrent costa. 
Leaves short, ovate, the very apex obtuse. 
Capsule cylindric, calyptra reaching middle . B. bracliyphylla, 20. 
Capsule ovate, calyptra reaching base B. purpurea, 21. 
Leaves longer, narrower, sharp pointed. 
Cells at base rectangular and pellucid. 
Capsule oblong-elliptic to sub-cylindric, sub-incurved, 
B. unguiculata, 13. 
Capsule oblong, small, erect. B. Jooriaua, 14. 
Cells at base quadrate, chlorophyllose B. Cruegeri, 18. 
2. Leaves gradually pointed. 
a. Leaves not papillose [inch B. artocarpaf\ 
Annulus none . . . . . . . . B. gracilis, 31. 
Annulus large, simple, persistent .... B. artocarpa, 30. 
h. Leaves papillose. 
i. Cells at base roundish , quadrate or short- rectangular. 
Annulus 0. 
Costa 70 p wide at base and tapering gradually . B. fallax, 15. 
Costa 50 p wide, of equal breadth to middle , B. recurvifolia, 17. 
Annulus pale, compound. B. elata, 27. 
ii. Cells at base rectangidar , often elongated. 
[B. fallax may be sought here.] 
Leaves erect-incurved, imbricate when dry. 
Cells above 5-7 p diameter.B. viuealis, 23. 
Cells twice as large.B. yiresceus, 25. 
Leaves squarrose-spreading orrellexed, twisted when dry. 
Pericheetial leaves open, sheathing only at base, revolute 
on edges.B. subfallax, 16. 
Perichsetial leaves half sheathing. 
Annulus simple, narrow, persistent . . . B. semitorta, 29 l . 
1 In Lesq. & James’ Manual, p. 126, In note under B. semitorta. read “ Comparable to 
B. vinealis ” instead of B. brachyphylla. See Pacif. B. R. Rept., iv, 186. 
