40 
Wisconsin Academy of Sciences , Arts and Letters. 
§ I. Aloidellse. 
Synoicous.B. brevirostris, 1. 
Dioicons. 
Annulus broad, revoluble, calyptra reaching the middle 
of the capsule.B. rigida, 2. 
Annulus small, persistent, calyptra barely covering the 
lid.B. ambigua, 3. 
§ II. Chloronotse. 
Leaves with hair points. 
Tip of leaf hyaline. B. meinbranifolia, 4. 
Tip of leaf concolorous. 
Hair smooth, leaves acute or somewhat obtuse . B. chloronotos, 5. 
Hair serrate, leaves rounded obtuse .... B. Henrici. 1 
Leaves without hair points. B. Maimise. 2 
§ III. Cuneifolise. 
Leaves bordered by 2-4 rows of thickened cells . . B. margiuata, 8. 
Leaves bordered by 1 row of round yellowish cells with 
prominent papillae, aristate B. Yahliana, 7. 
Leaves with a broad yellowish border, not pointed B. Egelingi Schliep. 2 
Leaves without a border. 
Costa excurrent into a hoary hair B. nmraiis, 12. 
Costa forming a short point or ceasing below apex. 
Leaf cells smooth.B. cimeifolia, 6. 
Leaf cells papillose [incl. B. amplexa f\ 
Peristome membrane long.B. brevities, 11. 
Peristome membrane short. 
Inner perichaetial leaves short B. Bolanderi, 9. 
Inner perichaetial leaves long-sheathing, abruptly 
reflexed.B. amplexa, 10. 
§ IV. Unguiculatse. 
[B. csespitosa may be sought here.] 
I. Peristome 0. . B. rubiginosa, 28 
\Rau: Bull. Washb. Coll. Lab. i (1886), 172. 
2 Muller: Flora 1887, 222. 
