134 BRYACE^. [Cinclidotus. 



45. CINCLIDOTUS, Beauv. 

 Aquatic, floating in long and wide greenish black tufts at- 

 tached by basilar radicles, fasciculate, rarely dichotomous. 

 Leaves oj^en, thickish, composed of parenchymatous cells, very 

 minute and chlorophyllose toward the apex ; costa stout, papil- 

 lose on the back. Flowers dioecious, the female terminal on 

 primary branches ; the male either terminal or agglomerate on 

 short secondary branches, becoming lateral or terminal by age. 

 Calyptra conical, cucullate, solid. Capsule immersed or emerg- 

 ing, thick. Teeth of the peristome cut into multiple filiform 

 divisions, coherent below, free above, papillose, reddish. 

 Annulus none. Spores large, verruculose. 



1. O. fontinaloides, Beauv. Leaves long, lanceolate, 

 somewhat flexuous, curved when dry, mucronate by the ex- 

 current costa : fruit generally abundant, nearly immersed in the 

 perichastial leaves : capsule ovate-oblong, soft, sulcate when 

 dry ; teeth large, purple, cleft from below the middle into two 

 or three filiform simple lacinite connected toward the base by 

 cross-bars or trabeculate. — Prodr. 52 ; Bryol. Eur. t. 277. 

 Trichostonium fontinaloides, Hedw. Muse. Frond, iii. 36, t. 14. 

 Hab. On stones in the bed of a creek, Ontario, Canada (Macoun), 

 sterile specimens. 



46. GRIMMIA, Ehrh. (PI- 2.) 

 Plants more or less compactly tufted or pulvinate, rooting at 

 the base only. Leaves close, open, rarely secund, lanceolate, 

 often piliferous at the apex ; borders generally entire, rarely 

 erose-denticulate at the apex ; surface more or less papillose. 

 Peristome (rarely absent) simple, of 16 teeth, transversely arti- 

 culate, lanceolate, entire or more generally variously split, 

 papillose, purple, hygroscopical. Annulus generally present. 



Subgenus I. SCHISTIDIUM. (PI. 2.) 

 Areolation minutely quadrate or punctiform in the upper 

 part of the leaves, the surface nearly smooth or with minute 

 sparse papillae. Flowers monoecious. Calyptra small, lobate, 



