1056 HEPATICiE COLLECTED BY MR. T. WHITELEGGE IN N. S. WALES, 



Obs. — This is the smallest species of the genus known to us. It 

 differs from Riccardia jjahnata (Heclw.) in its pale-green color, 

 unaltered when dry, more bipinnate ramification, plano-convex 

 section, marginal row of cells, and its gemmiparous terminal 

 branches. 



In H. palmata the section is bi convex and the margin blunt. 



DESCRIPTION OF PLATE XXXIV. 



Fig. 1. Plants nat. size. 2-3. Fronds x 16. 4. Upper layer of fronds x 

 290. 5-S. Cross-sections of frond x 85. 9. Club-shaped cells 

 magnified. 



46* Riccardia crassa (Schwaegr). 



Northwood, Lane Cove River (28). 



47 Metzgeria furcata, N. 



Ball's Head Bay, Febry., 1885, (31); Cambewarra, Sept., 

 1885 (C. Harris), (6-3). 



48 RiCCIA MARGINATA, n. .sp. 



Fronds divergent, dichotomous ; segments linear, obovate, 

 canaliculate, thick and fleshy, olive-green, lower surface rounded, 

 concolorous, margin fringed with semicircular scales, translucent, 

 with a wavy purple line at their base, inflexed when diy. Structure 

 columnar in the upper half, the prismatic rods truncate, chloro- 

 phyllose below. Capsules rare seated near the base of the fronds. 

 Spoi'es minute, with sub-cristate markings. 



Gi'owing in irregular scattered patches. Fronds large, dark 

 reddish or olive-green, bifurcate, segments linear, deeply divided, 

 obovate, oval or cuneate, convexo -inflexed when dry canaliculate ; 

 texture very firm, thick and cartilaginous, gradually narroMdng 

 towards the margin which is thin and pale, fringed with a row of 



