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48.Cr.StirtOTii Sohimper; Braithwaite. , 



Leaves not recurved; lower basal cells rectangular, the others 

 small Bubquadrate. — Rocks r. Eur, »Scotl. »: Braithwaite. 

 5. Unicoloriformee. 



A. Lower leaf-cells very sinuous. 



49.G.elliptica Turner. — Dicranum Turn.; Grimmia Arnott; 

 Racomitrium Br. eur. 



Leaves broadly ovate-lanceolate obtuse muticous, nearly ap- 

 pressed when dry; lower cells narrow, upper small dusky. 

 Capsule broad-oval; lid long-rostrate; calyptra mitriform; pedicel 

 straight. Tufts loose blackish when dry, not high. — Damp 

 schistose rocks princ. near Atlantic sea r. Eur. Norway: R. 

 Hartman; F. Kiaer; E. Nyman. 



B. Lower leaf-cells not sinuous. 



a. Leavee obtuse muticous. Pedicel straight. Tufts loose. 

 SO.G.unicolor Hooker. 



Leaves often faintly crisped when dry; cells faintly sinuous, 

 nearly all short yellow, uppermost opake very small. Capsule 

 brown oval-oblong; lid rostellate; calyptra us. mitriform. Tufts 

 about 4 c. m. or higher, blackish or brown-green when dry. 

 R. fruiting. — Wet rocks often near cascades princ. in alps. 

 Eur. less r. Norway, Switzerl.! Amer. r. Can.: Macoun. 



b. Leaves acute with often long hairpoint. Pedicel arcuate. 

 Tufts densely cohering. 



SLG.OIneyi SuUivant icon, muscor. 



Leaves appressed when dry, upper very long; cells greenish: 

 inner basal rectangular, alar quadrate, middle less distinctly 

 sinuous, upper opake very small. Capsule brown oval; lid 

 rostrate; calyptra cucullate; pedicel short not emergent; annulus 

 revoluble. Tufts 2 — 3 c. m. high us. grayish green. • — Amer. r, 

 Can.: Macoun. U. S.: Sullivant et Lesq., com. C. Mueller. 

 52.G.Austiiii Kindb. revue bryol. 1894. 



Differs from the last: Leaves longer and subfiexnous, less 

 appressed when dry; mi Idle cells distinctly sinuous. Pedicel 

 longer; calyptra mitriform. — Amer. r. U. S. New Jersey; Austin, 

 com. Macoun. 

 53.G.fragilis Schimper syn. ed. 2. 



Leaves brittle nearly appressed; nearly all cells short: basal 

 short-rectangular larger, alar rectangular hyaline, middle qua- 

 drate sinuous, upper opake very small; hairpoint rough, in up- 

 permost leaves long. Capsule pale brown small oblong; lid 

 obliquely rostellate; calyptra unknown; pedicel short but emer- 



