— 241 — 



basal larger, apical hyaline; costa excurrent to a very long 

 rough hail-point. 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. 

 S.C.Raui Austin. — C. Renauldi Cardot. 



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. 



4.C.calyptratus 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-cylindric 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. SuUiv., com. C. Mueller). 



106. Brachystelium Reichenbach; C. M. 



A. Perichetial leaves not convolute. Peristomial teeth pa- 

 pillose indistinctly articulate not deflexed. 



h 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. 



B. Perichetial leaves convolute. Peristomial teeth smooth 

 articulate, deflexed when dry, 



III. GUyphoniitriuin. Leaves entire not plicate. Plants small. 



I. Ptychomitrium Bruch. 

 l.B.polyphyllura 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 



