18 SYNOPSIS OF BRITISH MOSSES. 



erect. Caps, short, cylindric, on an obovate-conical 

 or spherical apophysis. 



51. Tetraplodon, J3. and S. Compactly csespitose, 

 radiculose. L. elongate-lanceolate or ovate-oblong, 

 with a subulate apex. Caps, on an obconical apophysis 

 as long as itself. Perist. of 16 teeth, approximating in 

 fours, afterwards in pairs, short, incurved, reflexed 



. when dry. 



52. Splachnum, Linn. Annual, loosely csespitose, 

 dichotomous, fastigiate. L. remote, spreading, broadly 

 obovate-lanceolate, narrow towards base, entire or 

 serrate, nerve scarcely excurrent. Caps, small, cy- 

 lindric, on a larger obpyriform or globose differently 

 coloured apophysis, lid convex. Perist. t. 16, in pairs, 

 linear, reflexed when dry. 



Tribe xv. Disceliaces. 

 Small, almost stemless. L. oblong-lanceolate, nerve- 

 less, cells lax, rhomboid, and hexagono-rectangular. 

 Caps, subglobose, subcernuous, on a long seta. 

 Calyptra cleft on one side from base to apex. Perist. 

 16 lanceolate, cleft, or perforate teeth. 



53. Discelium, Brid. The only genus. 



Tribe xvi. Funaeiacej?. 

 Annual or biennial. L. broad, with large, lax, 

 hexagono-rhomboid cells, sparsely chlorophy Hose. Caps, 

 erect and regular or cernuous and gibbous. Calyptra 

 dimidiate, lobed, or campanulate. Perist. absent or 

 present. 



Fam. 1. Ephemerse. 

 PI. minute. St. short, radiculose, from a green 

 filamentose prothallus. Calyptra thin, campanulate. 



