12 
A. Leaves generally papillose and opake above; 
upper cells mostly small and well-defined from the lower 
ones. Tufts dense. Calyptra rarely cucullate. 
* Fam. 26. Encalyptaces. 
Calyptra long-acuminate, cylindric. Basal leaf-cells 
finally rufous. : 
Capsule cylindric, often not necked. Calyptra not 
hairy but often rough. Leaves entire, sometimes with 
hairpoint. Plants growing on earth and stones. Hab 
of Barbula (Syntrichia). 
Fam. 27. Orthotrichaceze. 
Calyptra short-apiculate, usually mitriform (conie o 
campanulate), rarely cucullate. Basal leafcells not rufous. 
Capsule oval-oblong or subcylindric, mostly with 
distinct neck. Calyptra generally hairy. Leaves usuall 
entire, very seldom with hairpoint. Plants often pulvinate 
usually growing on trees, sometimes on rocks. Habit o 
Grimmia. r 
B. Leaves generally smooth and not opake; cells 
nearly uniform. Tufts sometimes loose. Calyptra cucullate 
Plants growing in swamps or on rocks. Poo rte 
Fam. 28. Messeaceæ. sa 
.. Capsule oblique, generally with long neck ; endosto 
mial segments free. QA M un : 
: Leaves mostly serrate, not or. indistinctly limbate, 
resembling those of Bryum in the areolation. - | 
| Fam. 29, Oinclidiacem, m. 
- Capsule not oblique; neck short and thick or indi- 
stinet ; endostomial segments connate above to a convex 
cupula. - t d t eit. o e dE 
_ Leaves entire, (usually broadly) limbate, resembling 
those of Mnium pu nciatum. — Dao > 
-Section atylepidece. Endostomial segments 
eth articulate. Leaves not comp i- 
broad, not conflu 
cle = v 7 
