— 248 — 



often emarginate; hairpoint longer, sometimes denticulate. Pe- 

 ristomial tube longer. Stem and pedicel very much shorter. 

 Dioecious. — Amer. r. Can. Brit. Col.: Macoun. 

 S.B.rotundo-emarginata C. M. et Kindb. 1. o. 



Differs from B. alpina: Leaves subspathulate shorter and 

 broadly emarginate, more reflexed to above middle; hairpoint 

 hyaline denticulate longer. Capsules unknown. Dioecious. — 

 Rocks r. Amer. Can. Brit. Col.: Macoun. 



bb. Peristome several times contorted, not much longer 

 than tube. 

 G.B.Iievipila Bridel. — Tortula Brid.; Barbula Br. eur. 



Leaves oblong-lingulate us. obtuse, nearly flat or slightly 

 reflexed at base; lower cells sometimes diversiform; costa brown 

 or green not denticulate but sometimes minutely papillose; 

 hairpoint hyaline us. smooth. Capsule long cylindric. Tufts 

 us. olive-green. Sometimes monoecious. — Trees princ. in 

 warmer distr. Eur. not r. France, Switzerl., Italy! Sweden: 

 S. Hardin. Amer. r. Can.: Roell. 

 T.B.bracliyangia C. M. et Kindb. 1. c. 



Differs from the last: Leaves more reflexed; costa red rough; 

 hairpoint pale red at least below, slightly denticulate above. 

 Capsule short suboblong; peristome not seen. Tufts reddish 

 brown. Dioecious. — Amer. r. Can. Anticosti: Macoun. 



B. Leaves gen. long and distinctly carinate; hairpoint den- 

 ticulate. Dioecious or (B. Muelleri) synoecious. 



a. Leaves faintly carinate; basal cells somewhat short and 

 wide nearly uniform, the outer often less pellucid and not 

 much narrower. Synoecious or polygamous. 

 S.B.Muelleri Bruch. — B. princeps C. M. 



Leaves long sublinear-lingulate obtuse, reflexed to above 

 middle, not or slightly curved when moistened; costa red nearly 

 smooth; hairpoint hyaline. Capsule large; teeth twice contor- 

 ted. Tufts high, rusty red below. — On stone r. on trees, r. 

 Eur. France," Philibert. Greece: Heldreich. Italy: Arcangeli. 

 Amer. Pacif. distr. Can.: Macoun. U. S.: com. Cardot. 



b. Leaves distinctly carinate; basal cells long uniform hya- 

 line not porose. Dioecious. 



Q.B.norvegica F. Weber. — Syntrichia F. Web. 1804; Bar- 

 bula Lindb.; B. aciphylla Br. eur. 1842. 



Leaves long sublinear-lingulate more or less acuminate or 

 acute; costa faintly rough; hairpoint red nearly smooth. — On 



