NEW HEPATICiE. 415 



Hab. Swan River. Mr. James Drummond, 



Fronds aggregate, scarcely | an inch long, sprinkled over 

 with pale green minute vesicles of different sizes, whose aper- 

 tures are unequal. The more adult fronds have sometimes 

 purple cells towards their centres. Capsules solitary, at the 

 hifurcation of the lobes crowned with a black style. Seeds 

 oblongo-rotundate, angulate. Under the margins of the fronds 

 occur solid oblongo-rotundate bodies rolled up in rootlets; 

 such, probably, are the buds. 



5. R. ? tuberosa, Tayl. ; fronde erecta, fusca, tenui, ex an- 

 gusta basi obovata, margine rotundato, undulato, bilobo, 

 basi radices inter tuberifera. 



Hab. Swan River. Mr. James Drummond. 



Plants aggregate, 2-3 lines high, subpellucid when moist- 

 ened, in colour resembling a Nostoc, in structure a Junger- 

 mannia. Two fronds are sometimes so opposed as to include 

 a cup-shaped cavity. At the base of the fronds, involved in 

 rootlets at the terminations of short processes are found 

 solid, pale tawney, rotundate or oblong bodies, solitary or 

 two together, a little curved, resembling the tubers of the 

 Orchidece. Such, when pressed under water, yield a fine 

 farina as well as opaque globules. Such tubers are so simi 

 lar to those of the preceding species, that the present is tem- 

 porarily placed among the Riccice, although it has more the 

 habit of a Symphyogyna. The discovery of the fructification 

 alone can clear up the genus. 



6. R. crinita, Tayl. ; fronde glaucescente, late lineari dicho- 

 toma, canaliculate, margine incurvo, squamis marginalibus 

 minutis atro-fuscis atque ciliis albidis, subulatis, rigidis, 

 conniventibus, subbinis occlusa. 



Hab. On clay ; n. 42. Swan River. Mr. James Drummond. 



Hook. Herb. 



Fronds rather dispersed, three-tenths of an inch long, 

 closed near the apices by white cilia from beneath the oppo- 

 site margins ; the length of these cilia and the purple mar- 

 gins of the frpnds separate this from R. ciliaia, Raddi. 



