29 
costa mostly narrow. Plants generally not large (exc. 
Oncophorus and Oreas). 
*  Peristomial teeth cleft. 
93. Dicranella. Capsule mostly curved, sometimes 
strumose, often sulcate when dry. Leaves narrow, often 
entire, sometimes sheathing; cells generally narrow, the 
alar not (exc. D. rubra) defined; costa often excurrent, 
seldom broad. 
94, Dicranoweisia. Capsule straight and not stru- 
mose (or, in one species, slightly curved and substrumose), 
not suleate. Leaves narrow, entire, not sheathing; upper 
cells short; alar cells mostly distinct; costa narrow, rarely 
excurrent. 
95. Oncophorus. Capsule curved, strumose, not 
suleate. Leaves with a very broad and sheathing base, 
often entire; upper cells short; alar cells not defined; 
costa narrow, not exeurrent. Plants mostly large. 
** Peristomial teeth us. entire. Capsule straight, 
striate, not strumose. Leaves narrow, denticulate; upper 
cells short. 
96.  Rhabdoweisia. Capsule terminal;  pedicel 
straight. Costa of the leaves not excurrent. Plants small. 
97. Oreas. Capsule lateral or sublateral; pedicel 
areuate. Costa of the leaves excurrent. Plants generally 
large. 
Fam. 22. Seligeriacez. 
I. Seligeriece. Alar leaf-cells not distinct. Plants 
very small, generally not tufted. Monoecious. 
98. Seligeria. Calyptra cucullate. - Peristome usu- 
ally well-evolute, in one species wanting. | 
99. Brachydontium. Calyptra submitriform. and — 
. lobate. Peristome rudimentary. Habit of Seligeria. — 
= 100. Trochobryum. Peristome rudimentary; teeth 
very short and truncate. Calyptra cucullate. Leaves. with 
a very long-excurrent costa. 
ei: IL  Blindiec.. Alar leat-eolis dilated, general — qe 
