— 298 — 
colored larger cells, smooth; other cells as in the last; costa 
percurrent or scarcely excurrent. Capsules unknown. Stem 
divided. Tufts dense, brown-ferruginous below, green at the 
tips, about 3 c. m. high. Habit of Barbula ruralis. — Wet 
rocks r. Amer, Pacif. distr. Can. Vane. isl »U. S. Calif.» 
C. M. herb. 
Fam. 27. Orthotrichacez. 
125. Orthotrichum Hedwig. 
A. Stomata of capsule superficial. . 
~.a. Leaves partly or wholly involute, not carinate. Dioe- 
cious. | 
I. Coelophyllum. Leaves short concave obtuse; cells gen. 
short. Capsule immersed sulcate strangulate when dry; calyp- 
tra scabrous; teeth reflexed when dry, broader than the cilia. 
b. Leaves gen. carinate and recurved nearly all around, 
not crisped. Monoecious or (O. exiguum) dioecious. 
IL Doreadion. Capsule r. strangulate; calyptra us. hairy. 
aa. Capsule narrow subcylindric not distinctly constricted, 
us, exserted. 
. l. Speciosa. Capsule nearly smooth at least when young; 
cilia narrow; teeth us. opake and connate in pairs. Leaves — 
carinate gen. long. 5 
bb. Capsule thick oval-oblong strangulate and sulcate, us. 
immersed; cilia narrow. 
2. Arctica. Leaves short often subcanaliculate, us. obtuse. 
3. Affinia. Leaves long carinate us. acute. | 
CC. Capsule thick suboval not strangulate. 
4. Rupestria. Capsule immersed or emergent, more Or 
less sulcate; teeth erect or patent when dry, joined in pairs. 
but us. subpartite; cilia narrow. Leaves long carinate. —— 
9. Leiocarpa. - Capsule wholly or partly immersed, not 
sulcate; cilia very broad; teeth not connate. Leaves sometimes — 
Short and nearly flat at borders. . 
€. Leaves faintly or not carinate, partly recurved or wholly | 
flat at borders, us. long and crisped. Sometimes dioecious.  - 
II. Lyellina. Capsule us. immersed; cilia somewhat broad. - 
Leaves not or faintly crisped; alar cells not hyaline, Dioecious, - 
often (in Europe) with propagula. when sterile. dic seti 
IV. Ulota. Capsule exserted; cilia narrow. Leaves more Or 
less distinctly crisped; alar cells mostly pluriseriate and hyaline. - 
Tufts us. pulvinate. Monoecious, ane 
