— 224 — 



a. Capsule nearly immersed, scarcely emergent above peri- 

 chetial leaves; calyplra cucuUate. Dioecious. 

 26.G.ortholoma Kindb. revue bryol. 1896. 



Leaves long, nearly appressed wben dry; nearly all cells 

 sinuous, middle rectangular; hairpoint long nearly smooth. 

 Capsule very small; lid with short conic or oblique beak. 

 Tufts 1 — 2 c. m. high. Leaves often with brown branched 

 brood-filaments. — Amer. r. Can. Brit. Col.: Macoun. 



b. Capsule distinctly emergent, yellowish; calyptra mitriform. 

 Monoecious. 



27.G.apicnIata Homschuch. 



Leaves subobtuse; cells j^eUow in younger state: middle and 

 upper short sinuous, alar rectangular; hairpoint short smooth. 

 Capsule oval; lid apiculate or mamillate. Tufts about 1 c. m. 

 high. Habit of G. ovata. — Alp. region r. Eur. Norway! 

 Austria: Breidler. • 



28.G.Holleri Molendo. 



Differs from the last: Leaves with longer hairpoint; nearly 

 all cells narrow. Capsule oblong with wider mouth; lid with 

 longer beak. Tufts about 2 c. m. high. — Higher alp. region 

 r. Eur. Austria: Breidler. 

 29.G.arenaria Hampe. — G. curvula Br. et Schimp. 



Leaves subacute very narrow sublinear; cells faintly sinuous 

 nearly all short, the lowest rectangular; hairpoint long smooth. 

 Capsule suboval; Ud obtuse muticous. Tufts less than 1 centim. 

 high. — Rocks and stone-walls also in alp. region r. Eur. 

 Switzerl.l Belgium: Schimper. 



B. Leaves more or less recurved. Stem often long. 



a. Angular (alar) leaf-cells indistinct or uuiseriate. Dioecious. 

 Leaves with obsolete or wanting hairpoint. 

 SO.G.patens Dickson. — Bryum Dicks.; Grimmia Br. eur. 



Differs from other species in the at back bilamellate costa 

 of leaves. 



Leaves long, recurved below middle at both sides, nearly 

 appressed when dry; nearly all cells us. sinuous, the middle 

 and alar subquadrate or short-rectangular, the inner basal long. 

 Capsule subovate pale brown not striate; lid rostrate. Tufts 

 us. loose and green; stem 5 — 10 c. m. long, r. shorter. Re- 

 sembles some species of Bacomitrium. Not r. fruiting. — Moist 

 quartzose rocks also below alps. Eur. not r. Sweden common, 

 Norway, Switzerl., Spain! Amer. Can.: Drummond; Macoun. 



