— 219 — 



3. Pulvinatse. 



A. Leaves carinate above. Pedicel of capsule arcuate when 

 young and moist. Us. monoecious. 



S.G.pulyinata L. — Bryum L.; Grimmia Smith. 



Leaves gen. ovate-oblong, more or less recurved below. Cap- 

 sule emergent brown striate either oval-oblong rostellate or 

 broad-oval with mamillate lid; calyptra mitriform. Tufts 1 — 2 

 c. m. high. — Rocks and stone-walls in lower districts. Eur. 

 not uncommon. Sweden, Germany, Switzerl.l Greece: Heldreich. 

 Amer. Can.: Macoun. 



* G.Philiberti Britton in Torr. bot. club XVIII, 2. 



» Leaves narrower, recurved all around, often with propagula; 

 basal cells rectangular. Capsule smooth; lid rostellate. Dioe- 

 cious. — Amer. r. Idaho: Leiberg»: Britton 1. c. 

 9.6.orbicularis Bruch. 



Lower leaves ovate-oblong, the upper ovate-lanceolate not 

 recurved at one side. Capsule emergent brown suboval faintly 

 striate; lid obtuse; calyptra cucullate. Tufts about 1 c. m. 

 high. — On stone. Eur. princ. in southern distr., somewhat 

 r. Germany: Schimper. France: Zetterstedt. Italy: Arcangeli. 

 Engl.: Rogers. 



B. Leaves neither carinate nor recurved. Capsule not striate; 

 pedicel not arcuate when moist. Dioecious. 

 lO.G.campestris Burchell. — G. leucophsea Greville. 



Leaves broadly ovate-lanceolate obtuse concave; basal cells 

 subquadrate; hairpoint nearly smooth and long. Capsule oval 

 reddish brown scarcely emergent; lid short-apiculate; annulus 

 revoluble; calyptra mitriform. Tufts about 1,5 c. m. high. — 

 Siliceous rocks. Eur. not r. in lower districts. Sweden, Switzerl.l 

 Amer. U. S.: RoeU. 



* G.sarcocalyx Kindb. cat. Canad. m. 



Leaves with more distinctly denticulate hairpoint. Capsule 

 broad-oval more emergent by the twice longer pedicel; lid obli- 

 quely rostellate. — Subalp. regions r. Amer. Can.: Macoun. 

 ll.G.tenella C. Mueller. 



Leaves ovate-lanceolate channelled; lowest basal cells short- 

 rectangular; hairpoint short or none. Capsule oblong pale brown 

 small; lid apioulate or rostellate; calyptra cucullate; pedicel 

 curved when dry. Tufts about 1,5 c. m. high, blackish when 

 dry. — Rocks in alp. region r. Amer. Can. Brit. Col.: Macoun. 

 U. 8.: RoeU. 



