EXPLANATION OF THE PLATES. 145 

 Leaves. Oblong-lanceolate, apex toothed. 



Flowers and Fruit. Barren, flower round, seta long, capsnle oval. Summer. 

 Locality. Peaty marshes. Common. 



Fig. 4. Aulacomnion androgynum. 

 Bud-headed Thread Moss (a) . 



Colour. Emerald green. 



Stems. Short, very little branched. 



Leaves (b) . Oblong-lanceolate, much smaller than in the last species. 



Flowers and Fruit. Barren flower, bud-like, at the end of the branch (terminal) ; 



capsule oblong, cernuous ; lid conical. Summer. 

 Locality. Woods and banks, never in marshes ; fruit very rare. 



ORTHODONTIUM. 



Pig. 5. Generic Character. 



Small and slender, capsule inclined, neck tapering, lid conical, calyptra small. 

 Peristome double, outer of sixteen teeth, inner a membrane in sixteen divisions, 

 when dry erect, when moist shrinking into the mouth of the capsule. 



Pig. 6. Orthodontium gracile. 



Slender Thread Moss (a) . 



Colour. Dark green. 



Stems. Short, branched tufted, bristle. 



Leaves (b) . Crowded, crisped when dry, thread-like. 



Flowers and Fruit. Monoicous, seta slender, curved, capsule inclined. Spring. 

 Locality. Sandstone rocks in the north of England. 



LEPTOBRYUM. 



Fig. 7. Generic Character. 



Stems annual, in patches, very short ; capsule inclined, pear-shaped ; lid con- 

 vex ; peristome as Bryum. 



