— 261 — 



short-rectangular; costa not excurrent. Periohetial leaveg icon- 

 volute with short broad obtuse point; costa not excurrent. 

 Capsule suboblong; lid rostellate; teeth half-twisted ■with 

 patent points when dry; annolus broad. Tufts dense. Habit 

 of Geratodon. — Sterile siliceous places r. Eur. Mediterr. distr. 

 Italy: Arcangeli. France: Goulard. 



C. Leaves entire not or indistinctly reflexed. Stem very short. 

 , aa. Leaves papillose. Peristome rudimentary or wahtingl 

 64.B.bicolor Br. eur. — Gymnostomnm Br. eur.; Barbula 

 Lindb. 



Leaves ovate-lanceolate acuminate acute marked with orangd 

 stripes at base; basal cells short-rectangular yellow or brown- 

 yellow; costa percurrent or short-excurrent. Capsule oblohg- 

 cylindric plicate when dry; annulus revoluble. Spores large. 

 Tufts dense. Dioecious. — ^ Crevices of calcareous rocks in 

 higher alp. reg. r. Eur, Switzerl.: Schimper; Culmainn. ■ *■ 



bb. Leaves gen. smooth. Peristome much contorted. > 



65.B.agraria Hedwig. — Bryum Swartz. 



Leaves subovate acute subinvolute, slightly twisted when dry; 

 celts rhombic-quadrate somewhat large; costa, subex«urrent. 

 Periohetial leaves broader, short-acuminate or obtusate,' not 

 wholly convolute; costa not percurrent. Capsule narrow-cylin- 

 dric; lid nearly as long; annulus revoluble. Stem nearly indi- 

 stinct. Monoecious. — Rocks and sand r. Amer. »tJ. S.»: 

 Lesq. et Jam. (Cuba: Wright, herb. Sullivant, com. C. Mueller; 

 S:t Thomas: Breutel, com. Roell). ; -:; 



66.B.Kaui Austin. 



» Leaves smooth spathulate- ovate acuminate or apiculate; 

 basilar areolation loose; costa subexcurrent. Perichetial leaves 

 convolute often blunt; costa thin. Capsule oblong-cylindric 

 plicate when dry; lid long; annulus narrow. Dioecious. ■^- 

 Rocks r. Amer. U. S.»: Lesq. et J. 

 67.B.Joorii C. Mueller in Flora 1875. -1|; 



»Leave8 nearly smooth from oblong half-sheathing base li-neai"» 

 lanceolate obtusate mucronulate, faintly crisped; basal cells 

 short-rectangular hyaline; costa excurrent. Perichetial leaves 

 from oblong sheathing base acuminate not mucronate. Capsule 

 oblong; teeth rufous; calyptra rough. Dioecious, Habit of 

 B. unguiculata. Stem very short. — Amer. r. U. S.»: CM'. 



3. Leptobarbula Schimper. 

 68.B.tenuis Hedwig, — iTrichostomum Hedwig»: C. M.; Bar- 

 bula Kindb.; Didymodon bericus Notaris. : , . . 



