— 254 — 



brittle); costa short-excurrent. Dioecious or {B. ccBspiiosa) mon- 

 oecious. 



a. Lower leaves very small, the upper suddenly much lar- 

 ger. Peristome not or slightly twisted. Tufts low yellowish 

 green. 



32.B.flaTOTirens Bruch. — Trichostomum Bruch; BarbulaKindb.; 

 Tortula Lindb. 



Leaves shorter than in B. tortuosa; the upper from broader 

 base sublinear short-acuminate gen. obtuse; costa subpercurrent. 

 Capsule Buboblong or subcylindric; teeth dark-red not twisted; 

 pedicel red-yellow. — Calcareous rocks r. Eur. princ. in Me- 

 diten'. distr. France: Schimper. Italy: Arcangeli; Bottini. Engl.: 

 Holt. Amer. »U. S.»: Lesq. et Jam. 

 * B.Tiridiflara Notaris. — Trichostomum Not.; Barbula Kindb. 



Leaves shorter and not crisped; costa narrower and longer- 

 excurrent. Capsule shorter; teeth orange. — Eur. r. Italy: 

 Forsyth, com. Levier. 



33.B.inflexa Bruch. — Trichostomum Bruch; Bai-bula Kindb.; 

 Tortula Lindb. 



Differs from the last: Upper leaves incm-ved at apex; costa 

 excurrent to an hyaline point. Capsule suboblong; teeth red 

 slightly twisted; pedicel yellow above. — Calcareous rocks r. 

 Eur. Italy: Venturi. 



b. Leaves gradually larger upwards. Peristome us. con- 

 torted. 



34.B.tortuosa L. — Bryum L.; Barbula Weber et Mohr. 



Leaves gen. long longly acuminate and nearly subulate, 

 r. shorter and brittle; costa very short-excurrent. Capsule 

 oblong-cylindric or subcylindric; teeth red us. several times 

 contorted; pedicel yellow above. Tufts us. high and yellowish 

 green. — Rocks princ. calcareous. Eur. common. Sweden, 

 Norway, Switzerl.I Amer. not r. Can.: Macoun. 



^Trichostomum Bambergeri Schimper. — Leaves brittle sub- 

 linear or the upper long-acuminate subulate, sometimes broader 

 acuminate with some teeth and large hyaline cells at apex. 

 Capsule oblong-cyUndric; teeth red not twisted. Stone-walls r. 

 Eur. Austria: Bamberger and Breidler*: Limpricht. — A doubt- 

 ful species, sDidymodon mutabiUs var.»: Venturi et Bottini. 

 35.B.inclinata Hedwig fil. — Tortula H. fil.; Barbula Schwse- 

 grichen. 



Leaves shorter than in B. tortuosa, from broader base sub- 

 linear gen. obtusate or sometimes cucuUate at apex. Capsule 



