— 941 — 
basal larger, apical hyaline; costa excurrent to a very long 
rough hairpoint. Perichetial leaves not larger. Capsule im- 
mersed suboval, truncate at base; pedicel shorter; teeth purplish. 
Stem very short. — Rocks r. Amer. »U. S. south. states»: 
Lesq. et Jam. 
3.C.Raui Austin. — C. Renauldi Cardot. j 
Differs from the last: Leaves carinate narrower more distinctly 
acuminate not recurved, patent when moist, gen. entire with 
shorter hairpoint; costa gen. not excurrent. Capsule globose 
when young, finally oval; teeth sometimes cleft. — Amer, r. 
U. S.: Henry, com. Cardot. 
4C ealyptratus Hooker. — Grimmia Hook; Sull. icon. m.; 
Coscinodon C. Jensen (in litt); Grimmia columbica Kindb. 
bull. Torr. club. 
Leaves ovate-lanceolate channelled, recurved below; basal 
cells subquadrate much larger than the upper; hairpoint long 
rough; costa percurrent. Perichetial leaves sublinear much 
longer.’ Capsule not or scarcely emergent above the hairpoints, 
oblong-cylindrie smooth or slightly striate yellow or orange- 
colored: lid rostrate or rostellate; annulus none; pedicel straight 
or r. curved, longer than capsule. Stem 2—3 c. m. long or 
shorter. Tufts dense glaucous green. — Dry alp. rocks. Amer. 
Can. Pacif. distr.: Macoun. U. S. Calif.: com. Macoun. (Mexico: 
Fendler, herb. Sulliv., com. C. Mueller). 
106. Braehystelium Reichenbach; C. M. | 
A. Periehetial leaves not convolute. Peristomial teeth pa- 
pillose indistinctly articulate not deflexed. 
l. Ptychomitrium. Leaves plicate below, serrate above. 
. Peristomial teeth us. subpartite. Plants somewhat robust. Ha- 
bit of Orthotrichum (Ulota). : 
II. Notarisia. Leaves not plicate, entire or slightly sinuolate. 
Peristomial teeth often entire or irregularly cleft. Plants small. 
Habit of Weisia. 3 ij 
B. Perichetial leaves convolute. Peristomial teeth smooth 
articulate, deflexed when dry. 
Ill. Glyphomitrium. Leaves entire not plicate. Plants small. 
i I. Ptychomitrium Bruch: ; 
1.B.polyphyllum Dickson. — Bryum D.; Brachystelium Horn- 
schuch, 
Leaves from ovate-oblong subconcave broadly recurved base 
Somewhat abruptly tapering to a long carinate nearly subulate 
acumen, incurved or nearly straight when moist; outer basal 
