BY L. RODWAY. iBl 



1913. 



Brachymenium Schw, 



Small, erect, innovating from below the fertile apex as in 

 Bryum. Leaves ovate; nerve bold; cells rhomboid. Seta 

 long; capsule oblong; lid conic; exostome of 16 closely 

 articulate teeth ; endostome reduced to the membranous 

 base, and few irregular processes. 



Differing from Bryum only in the endostome. 



Brachymenmm Preissianum (Hpe.) 

 Small, caespitose, usually 2 mm. high. Leaves ovate- 

 acuminate, I mm.; margin plain, closely revolute; nerve 

 bold, shortlv excurrent ; cells rhomboid, rectangular below. 

 Seta 2 cm., slender; capsule oblong, dark red, 1.5 mm., 

 horizontal, neck short, mouth constricted; lid conic, 

 calyptra very small, cucullate ; exostome teeth lanceolate, 

 fairly long; endostome membrane with long slender cilia. 

 On wall, Hob art. 



Bryum Dill. 



Small plants with terminal fruiting, but innovating by 

 two shoots arising close below the fertile apex so as to ob- 

 scure the true position. Leaves ovate-spathulate to lanceo- 

 late; nerve well developed, usually excurrent; cells rather 

 large, thin walled, hexagonal or rhomboid, broader towards 

 the base Seta long; capsule pyriform to oblong with a 

 solid neck, inclined or pendulous; lid convex, apiculate ; 

 peristome double; exostome of 16 lanceolate attenuated 

 teeth ; endostome a. deep carinated membrane bearing 

 above 16 narrow risually porous processes as long as the 

 teeth, with one to three intervening ciliai. The shape of 

 the processes varies a little in different species, also the 

 size and number of the cilia. These latter when well de- 

 veloped bear cross appendages. 



A very large genus usually divided into subgenera upon 

 habit and the structure of the endostome. In systematic 

 work the relation of the antheridia. is generally made much 

 use of, but not always with advantage. 



Group A. Plants ratlier larofe for the genus. Leaves 

 mostly clustered at the ends of the shoots, ovate, oblong, or 

 spathulate, apex little acuminate. Capsule with a taper- 

 ing base. 



With a distinct border. 



Margin with many serrations. 



Nerve excurrent in a short, bold point. 



Cells large lax B'dlarclierl 



Cells small stiff hrevlramulosvm 



