56 Wisconsin Academy of Sciences , Arts and Letters. 
Leaves bordered. 
Teeth very short (scarcely 200//), articles 10-12 . B. Labradorense , l . 
Teeth much longer, articles about 20. 
Costa excurrent, leaves reddish, margin scarcely 
revolute.B. purpurascens, 2. 
Costa vanishing or barely excurrent, margin strong¬ 
ly revolute.B. lacustre, 8. 
[B, flexuosiun may be sought here.] 
C. Dioieous. 
Endostome adherent to peristome, cilia 0 . B. flexuosiun, 9. 
Endostome free, cilia single . . . . B. Californicum, 34. 
§ II. Eubryum. 
A. Synoicous. 
Costa not excurrent.B. Or eg'aim m, 18. 
Costa excurrent into a smooth point. 
Margins recurved ....... B. torquescens, 16. 
Margins plane.. B. microstegium B. & S. 2 . 
Costa excurrent into a serrate point. 
Leaves short pointed, decurrent 
With a broad border ....... B. Milium, 14. 
Without a border.B. lonchocaulon, 15. 
Leaves long-cuspidate, not decurrent. 
Not bordered, entire ..... B. intermedium, 12. 
Not bordered, serrate at apex .... B, provinciate, 17. 
Bordered ..B. cirrhatum, 13. 
B. Autoicous. 
Capsule horizontal or nodding, leaf margins revolute . B. pallescens, 19. 
Capsule pendulous, leaf margins plane . . . B. subrotundum, 20. 
C. Dioieous . 
1. Costa not excurrent, or when excurrent forming a short point only. 
a. Leaves obtuse. 
Distant, broadly ovate or oblong, rounded . . B. cyclophyllum, 35. 
Imbricate, narrower. 
Dull olive green, margins strongly revolute .' B. Muhlenbeckii, 26. 
Yellowish-green or purplish, tips of branches crimsoned. 
Cells polygonal, thick-walled . . . . B. miniatum, 27. 
Cells rhombic, subquadrate below . . . . B. Atwater iae, 28. 
1 Philibert: Revue Bry., 1887, 55. 
^Renauld and. Cardot: Bot. Gaz. xiv (1889), 99. 
