— 289 — 



short with conic beak; annulus narrow. Tufts us. light green 

 mostly encrusted by chalk, lower than in the last. — Calcareous 

 rocks. Eur. not uncommon in southern distr. Switzerl.l France: 

 Philibert. Spain: Levier. Italy: Arcangeli. Amer. r. Can.: 

 Macoun; Waghorne. 

 24.W.falcata Kindb. bull. soo. hot. ital. 1895. 



Differs from the resembling last: Upper leaves distinctly ca- 

 rinate somewhat long- acuminate and gen. acute, falcate when 

 moist; copta gen. percurrent. Inner perichetial leaves long- 

 acuminate not or indistinctly sheathing. Lid of capsule nearly 

 flat. Tufts dark green less compact. — Calcareous rocks r. 

 Eur. Italy monte Caprino near Lugano: Roell and Kindb. 



B. Tufts loose very low. Capsule minute; annulus us. broad. 

 Leaves channelled. Plants small. 



a. Lower leaves not shorter than the upper; cells pellucid, 

 the upper nearly smooth well-distinct. 



25.W.Barbnla Schwsegrichen. — Gymnostomum Schw.; Weisia 

 Kindb.; Hyophila Hampe; Pottia C. M. 



Leaves not long, obtusate gen. obtuse, not or faintly curved 

 when moist. Perichetial leaves nearly similar not sheathing; 

 the innermost one from short base somewhat narrowed to a 

 long linear obtuse at one side faintly reflexed acumen. Capsule 

 long cylindric; beak short; teeth none; annulus broad loosed 

 in pieces. — Rocky banks of mountain rivulets r. Amer. 

 »U. 8.: Garber»: Lesq. et Jam. (Cuba: Wright, herb. Sullivant, 

 com. C. Mueller). 



b. Lower leaves shorter than the upper; upper cells opake 

 very small. Leaves often curved when moist. 



aa. All leaves short; costa not percurrent. Capsule with 

 broad annulus. 



26 W.tenuis Schrader. — Gymnostomum Schrad.; Weisia C, 

 M.; Gyroweisia Schimper. 



Leaves sublingulate arrounded at apex not acuminate. Peri- 

 chetial leaves larger and longer with long sheathing base and 

 sublinear obtuse shorter acumen. Capsule oblong; lid conic 

 much shorter; teeth none; annulus often revoluble. Stem often 

 with shoots at base; their leaves smaller and shorter. — Lime- 

 stone and sandstone rocks princ. in warmer districts. Eur. less 

 r. Sweden, Switzerl.l France: Lamy. Engl.: Cunliffe. Amer. 

 r. Can.: Diummond 21; White, com. Macoun, 



