BY BARON VON MUELLER. 459 



COCHLOSPERMUM HETERONEMUM, F.V.M. 



Prince Regent's River. 



Polygala Chinensis, Linne. 

 Prince Regent's River. 



Polygala leptalea, De Candolle. 

 Carson's River. 



Owenia vernicosa, F.v.M. 

 Prince Regent's River. 

 Some of the leaflets may become reduced to eight. 



Hibiscus panduripormis, Burmann. 

 Woodhouse River. 



Hibiscus zonatus, F.v.M. 



Prince Regent's River. 



A variety with velvety vestiture, proportionately broader leaves, 

 twenty-cleft involucel not fissured to the base. This species differs 

 from all other Australian congeners already in the larger number 

 of involucellar segments ; from the allied H. Goldsworthii besides 

 injthe thinner and closer indument, less acutely denticulated leaves 

 and [nearly glabrous petals. This plant was traced southward by 

 the Hon. Sir John Forrest to the Sherlock River, and by Mr. H. 

 S. ^ King to near the Gascoyne River. 



GOSSYPIUM THESPESIOIDES, F.V.M. 



Prince Regent's River. 



A variety with cordate leaves, glabrous on the surface; the 

 involucel is three times shorter than the calyx, and has several 

 very short and narrow lobes ; the petals are shiningly tomentellous 

 outside except towards the summit ; the glandular dots, charac- 

 teristic for Gossypiitm, are much concealed. 



