Analytic Keys to the Species of Mosses. 
33 . 
iii. Leaves serrulate. 
Upper cells very irregular. 
Weakly papillose over partitions, capsule not striped, 
D. congestum, Brid. 1 13. 
Not papillose, capsule striped. 
Inner perichaetial leaves obliquely truncate to a short 
serrate subula.B. Mulilenbeckii, 14. 
Inner perichaetial leaves narrowed to thong-shaped 
point.B. rhabdocarpum, 15. 
Inner perichaetial leaves rounded with a short subula, 
B. s abide to rum. 2 
Upper cells regular, quadratic.B. fuscescens, 3 13. 
b. Capsule erect , symmetric. 
Costa without stereides.B. strictum, 5. 
Costa with two stereide bands. 
Lamina above of two layers. 
Margin and costa serrulate.B. fidvum, 9. 
Entire, apex usually broken.B. yiride, 7. 
Lamina throughout of one layer. 
Upper cells rectangular and mamillose . . B. montanum, 6. 
Upper cells less regular, not mamilloie . . . B. flagellare, 8. 
D. leioneuron and D. stenodictyon of Kindberg, Ottawa Nat. ii (1889) 155- 
and Bull. Torr. Bot. Club xvi (1889) 92, are species of uncertain relations. 
I have not seen authentic specimens, and the descriptions are too meager 
to enable me to form any judgment. 
OAMPYLOPUS, p. 77. 4 
I. Costa smooth at back. 
A. Auricles none. 
[C. gracilicaulis may belong here.] 
Upper leaves with hyaline points.C. Henrici. 5 6 
Upper leaves without hyaline points.C. Leanus, 4. 
1 D. fuscescens of Manual. 
2 Renauld & Cardot: Bot. Gaz. xiv (1889) 91, pi. XII. 
3 This is var. longirostre and var. angustifolium of Manual. 
4 The genus is greatly in need of revision, with a view to discovering differential struc¬ 
tural characters of the leaves. The few figures and meager descriptions render the key un - 
certain in many points. 
6 Renauld & Cardot: Bot. Gaz. xiii (1888) 197, pi. XIV. 
3 -A. & L. 
