EXPLANATION OF THE PLATES. 123 



Plate XVII. 



PTTCHOMITEIE^. 



Chaeacteristics of Oedee. 



Plants tuftedj on rocks ; stems forked (dichotomous) ; branches of equal height 

 (fastigiate) ; leaves lanceolate ; areolee minute ; capsule erect ; beak straight ; 

 peristome singicj of sixteen teeth ; calyptra very large, and furrowed ; apex very 

 smaU. Figs. 1 (b) , S (6). 



GLYPHOMITRION. 



Fig. 1. G-ENEEic Chaeactee. 



Minute plants ui tufts ; capsule (a) roundish ; beak short ; calyptra (6) large, 

 bladder-like ; peristome (c) inserted below the mouth of capsule ; teeth short and 

 wide, ia pairs, with external bars, turned back when dry. 



Fig. 2. Glyphomiteion Daviesii. 



Black-tufted Moss (a) . 



Colomr. Greenish black. 



Stems. Very short, tufted. 



Leaves (b) . Liaear-lanceolate, crisped when dry ; nerve strong and thick. 



Floivers and Fruit. Monoicous. Seta short ; capsule round, entirely covered by 



the calyptra. Summer. 

 Locality. Eocks near the sea. 



PTYCHOMITRIUM. 

 Fig. 3. Geneeic Chaeactee. 



Capsule (a) oval ; beak straight, long ; calyptra (b) very much furrowed, many 

 times divided at the base ; peristome (c) of sixteen teeth, divided almost to the 

 base, the divisions thread-shaped (filiform) ; not affected by damp. 



