— 288 — 



VI. Hymenostylium Bridel. 

 20.W.curTirostris Ehrhart. — Pottia Ehrh.; Weisia C. M.; 

 Gymuostomum Hedwig. 



Leaves long narrowly ovate-lanceolate or sublinear acuminate 

 acute carinate, more or less papillose: the upper sometimes 

 falcate; cells often faintly yellowish or less pellucid, rectangular 

 or subquadrate; the lower basal cells hyaline sometimes 

 rhomboidal. Perichetial leaves costate nearlj' similar. Capsule 

 red-brown subglobose oj- obovate; beak longer and oblique. 

 Tufts radiouloee often high, sometimes loosely cohering. — 

 Calcareous and schistose rocks princ. in alps. Eur. not un- 

 common. Sweden, Norway, Switzerl.! Amer. Can.: Macoun; 

 Waghorne. U. S.: Demetrio, com. Cardot. 

 21.W.platyphjila Kindb. — Gymnostomum Kindb. bull. Torr. 

 club 1889. 



Leaves oblong-lanceolate obtusate obtuse nearlj' smooth con- 

 cave or channelled, shorter and broader than in the last; cells 

 pellucid somewhat large: the upper subquadrate, the inner 

 basal rectangular hyaline. Perichetial leaves ovate, the inner 

 not or indistinctlj' costate. Capsules unknown. Tufts not 

 high nearly eradiculose. — Rocks r. Amei-. Can. Brit. Col. 

 near a waterfall.- Macoun. 



VII. Gymnostomum Hedwig. 



A. Tufts compact. Stem somewhat elongate. Capsule with 

 indistinct or narrow persistent annulus; peristome none; pedicel 

 yellow. 



22.W.rnpestris Schleicher. — Gymnostomum Schl.; Weieia 

 C. M. 



Leaves carinate often acuminate, acute or obtuse, not or 

 faintly curved when moist, somewhat long; costa not percurrent. 

 Perichetial leaves nearly similar not sheathing. Capsule oblong 

 finally pale yellow, at least twice longer than the conic beak; 

 annulus none. Tufts often high us. brown-green. — Rocks 

 princ. siliceous. .Ewr. not uncommon. Sweden, Norway, Switzerl.l 

 Engl.: Holt. Amer. Can.; Macoun; Waghorne; Drummond 24. 

 23.W.ca]carea Esenbeck et Hornschuch. — Gymnostomum 

 Es. et Hornsch.; Weisia C. M. 



Leaves channelled or indistinctly carinate above, obtusate or 

 short-acuminate, acute or obtuse, not or faintly curved when 

 moist, not long; costa not percurrent. Perichetial leaves larger 

 and longer with long sheathing base and shorter, attenuate 

 acumen; the inner shorter. Capsule oval-oblong yellowish; lid 



