40 SYNOPSIS or BEITISH MOSSES. 



more or less acuminate, cells narrowly hexagono* 

 rhomboid, minutely quadrate at angles. Caps, on a 

 smooth or rough seta, cernuous, short, thick, turgid, 

 lid tumid, conical, with a long or short beak. 



119. Ptychodium, /Sc/ip. Tufts entangled. Br. sub- 

 pinnate. L. patent or secund, with several deep 

 plicae, slenderly nerved to apex, ovate-lanceolate, cells 

 linear-rhomboid. Perist. ext. t. long, int. membrane 

 with processes as long as teeth, with rudimentary 

 cilia. 



120. Brachythecium, fifcA-^'. PI. irregularly branched. 

 L. patent, rarely subsecund, silky, more or less de." 

 current at angles, thinly nerved, irregularly sulcate, 

 cells narrowly hexagono-rhomboid, generally quadrate 

 at base. Caps, cernuous, on a rough or smooth seta, 

 turgidly ovate or subglobose, rarely oblong, lid conical< 



121. Myurium, Schp. L. densely imbricate, jula' 

 ceous, very concave, cochleariform, suddenly passing 

 into a long filiform apiculus, shining, nerve absent or 

 slender, cells vermicular. Pruct. unknown. 



122. Scleropodium, 8ehp. General habit of Brachy- 

 ihecium, with 1. cells narrow, vermicular, at decurrent 

 angles excavate, hyaline. Caps, suberect or cernuous, 

 oblong or ovate, more or less incurved, seta, rough. 

 Perist. inner processes with appendiculate ciliolae. 

 Dioicous. 



123. Hyocominm, Schp. Br. pinnate, densely leafy. 

 St. 1. broadly triangular or cordate, decurrent, with a 

 long apiculus, serrulate, nerve short, bipartite, upper 

 cells flexuose-linear, middle linear-rectangular, at angles 

 hexagono-rectangular. Caps, on a papillose seta, 

 turgid, oval, lid convex, apiculate. 



124. Eurhynohium, Schp. PI. small or taller. Br. 



