i44 BRITISH MOSSES. 



Plate XXI. 



BRYE^. Part I. 

 TIMMIA. 



Geneeic Chaeactee. 



Capsule terminal^ horizontal ; peristome double, outer of sixteen teeth, inner of 

 a membrane divided iato sixty-four teeth. Leaves in eight rows. 



Fig. 1. TiMMiA austeiaca. 



Sheath-leaved Timmia (a) . 



Colour. Dark green. 



Stems. Long, decumbent below, erect above. 



Leaves [h) . Linear-lanceolate, base widely sheathing, coarsely serrated. 



Mowers and Fruit. Monoicous, seta two inches long ; but barren in Britain. 



Locality. Banks of the Isla, above Airly Castle, Forfarshire. 



AULACOMNION. 

 Fig. 2. Geneeic Chaeactee. 



Growing in marshes or on banks ; capsule oblong, curved above (cernuous) , 

 striated deeply ; stems erect, radiculose ; with buds {gemmce) at their ends. 



Fig. 3. Aulacomnion palustee. 



Marsh Thread Moss (a) . 



Colour. Yellow green, rusty-looking, from the thick mats of radicles which beset 



the stem. 

 Stems. Long, much branched. 



