144 HANDBOOK OF BRITISH HEPATIC^. 



recede downwards, so that the basal leaves have 

 a different appearance (fig. 102, lower leaves). 

 Colour yellow green. Perichaetial leaves large, 

 roundish, divided into two or three acute lobes or 

 segments, paler than the cauline leaves. Calyx 

 globose, and concealed, then obovate, a little plicate 

 above, mouth contracted, and minutely dentate. 

 Capsule reddish brown, striate. Elaters bispiral. 

 (Plate 3, fig. 43.} 



Diplophyllum Hellerianum, 



Stem ascending, branched, leaves bifarious, 

 two-lobed, conduplicate ; lobes acute, with a 

 tooth at the base, perichaetial leaves serrate ; 

 perianth terminal, obovate. 



Jungermannia Helleriana, Nees in Lind. 

 Syn. p. 64; Ekart. Syn. Jung. t. 12, fig. 103; 

 Gott. and Rab. Exs. 303 ; Carr. and Pears. 

 Exs. No. 164. 



On trunks. 



Stems creeping, intricately interwoven. Leaves 

 complicate-concave, lower spreading, somewhat as- 

 cending, dimidiate, or bifid for a third part down, 

 lobes equal, acute, entire or serrate ; involucral 

 leaves bifid or trifid, spinulosely-serrate ; perianth 

 ovate, contracted at the mouth. Stipules none. 

 (Plate 3, fig. 42) 



Diplophyllum obtusifolium, Hook., Dum. 



Stem ascending, simple ; leaves bifarious, 

 unequally two-lobed, conduplicate ; lobes 



