1 



30 THE SPHAGNACE^ OR PEAT-MOSSES OF 



D, Cuspidata. Branch leaves ovato-lanceolate or narrowly 

 lanceolate, with the points elongated, truncate, and 

 toothed ; margin strongly involute at point. 

 Branches 7-12 in a fascicle. Wtdfii. 



Branches 3-6 in a fascicle. 



Stem leaves narrower at base than above. 



Stem leaves rounded at apex, fringed all round the 



upper half fimbriatutn. 



Stem leaves truncate, only fringed along the transverse 



margin. Lindbergii. 



Stem leaves not narrower at base. 



Stem leaves not bordered ; branch leaves squarrose. 



squarrostim. 

 Stem leaves broadly bordered with narrow cells ; 

 branch leaves erec to-patent. 



Branch leaves with very large pores. 



Stem leaves tongue - shaped, more or less 

 pointed. acutifolium. 



Stem leaves as wide above as at base, truncate, 

 fringed at apex. stridum. 



Branch leaves with very small pores. 

 Stem leaves triangular, cells of border rather short. 

 Pendent branches concealing stem. Cuticular 

 cells thin and indistinct. intermedium. 



Stem leaves triangular, cells of border very narrow 

 and el ongated. Pendent branches not conceal- 

 ing stem. Cuticular cells distinct, cuspidahim. 



Sect. II. — Hemitheca, Lindb. 



Branches homomorphous, solitary or in pairs ; their leaves 

 with spiral fibres. Stem leaves and branch leaves alike, obtuse. 

 Capsule wide-mouthed, hemispherical. Pylaiei. 



Sect. III. — IsocLADUS, Lindb. 



Branches homomorphous, fascicled, all arcuato-divergent ; their 

 leaves lanceolate-subulate, without spiral fibres, but with a central 

 longitudinal row of pores. Capsule as in Sect. I. macrophylhim. 



