EXPLANATION OF THE PLATES. 125 



Plate XVII, [continued) and XVIII. 



ORTHOTRICHEiE. 



Fig. 5. Chaeacteeistics op Oedeb. 



Capsule (a) immersed, or on a short seta, very long, cylindrical or pear- 

 shapedj swelling at the base [apophysis) , long, with eight or sixteen coloured ribs 

 istricB) , which alternate with the teeth, and m.ake the capsule appear deeply 

 furrowed ; calyptra (6) large, and beset with upright bristles (whence the name 

 Bristle Moss) ; peristome (c) single or double, below the mouth of capsule, its 

 thirty-two divisions apparently forming eight or siixteen teeth ; inner peristome, 

 when present, consisting of eight or sixteen cilia. Small j)lants, stems much 

 branched, growing in round cushions on trees and rocks ; the leaves remarkably 

 crisped when dry. 



I. Capsule iinmersed, calyptra ivith sixteen fitr rows. 



Fig. 6. Oethoteichum cupulatum. 



Sessile-fruited Bristle Moss (a) . 

 Colour. Dark green. 



Stems. Branched, half-iach long. 



Leaves. Lanceolate, keeled, spreading ; nerve large. 



Floiuers and Fruit. As in all the species, the cajDsule comes to maturity in twelve 



months after its first formation. Capsule immersed ; lid short ; calyptra 



Hght coloured. Summer. 

 Locality. On limestone rocks and walls. 

 Variety (Fig. 7) . 0. nudum. — Larger, leaves coarsely toothed at the apex; 



appearing above the leaves [exserted) ; calyptra without hairs. 



Fig. 8. Oethoteichuivi anomaltjm. 



Anomalous Bristle Moss (») . 

 Colour. Dark green. 



Stems. Branched, branches few. 



