206 TAS:MANIAN BRYOrHYXA, 



R.S. TAS. 



linear or vermiform, thin walled, smooth, those towards 

 the base quadrate and larger. Seta long rough with minute 

 tubercles or smooth ; capsule narrow to broadly oblong 

 with a bluff base, inclined, curved ; lid conic, often with 

 a long beak ; peristome double, the exostome teeth narrow 

 lanceolate with an irregular h^^aline border ; endostomc a 

 deep membrane and 16 processes as long or longer than 

 the excstome, cilia 1-3, blender. 



The genus is large and the species closely related. In 

 order to reduce the group to more convenient dimensions 

 it is often the custom to divide it into genera founded on 

 unimportant details. 



Brachythecium. Generally robust. Capsule broadly ob- 

 long with a bluft base; lid conic, the rostrurii 

 short. Leaves plicate. 

 Robust. Leaves not secund. 



Seta rough throughout riitahulnm 



Seta rough above, smooth below ... campestre 



Seta smoot li salebrosuin 



Small. Leaves secund jaradoxum 



Khynchostegium. Leaves spreading on all sides from a 

 narrow slightly clecurrent base, not plicate, with 

 a strong nerve. Seta smooth ; lid with a long 

 slender beak. 



Leaves strongly serrate aristatum 



Leaves slightly serrulate tenuiJoHum. 



Rhynchostegiella. Small mosses. Leaves divergent, 

 lanceolate, acuminate, remotely serrulate. Seta 

 rough ; capsule tapering at the base ; lid with a 

 long nearly straight rostrum. 



Leaves olituse coiivolutiJoUum 



Leaves veiy acute miwiculatiwi 



OxYRRHYNCHiuM. Medium sized. Leaves broadly oblong 

 acuminate, finely or remotely serrulate. Seta 

 rough ; capsule with a long curved beak. 



Leaves large^ patent austrinum 



Leaves small, divaricate, broad remotifolium 



llyptmin rutahulum L. 

 Decumbent, spreading in loose yellowish green mats, 

 irregularly pinnate. Leaves patent, glossy, ovate, with a 

 slender apex to but shortly pointed, apex remotely to 

 closely serrulate; nerve faint, lost in or above the middle, 

 2.3 mm.; cells narrow-linear, those at the base and angles 

 broader. Seta dark red rough throughout, capsule cylin- 



