59 



part only, unless finally deeper ; petals pale-yellow, glabrous,, 

 orbicular-ovate, not distinctly gland-bearing, though slightly 

 thickened at the base ; anthers cordate- or globular-ovate ; 

 style glabrous ; fruit-bearing pedicels one-third to half-inch 

 long ; torus extremely short ; disc spreading, membranous, 

 undulating, glabrous; well-developed fruits one-third inch 

 long, but not rarely smaller and also then maturing ; its ves- 

 titure greyish and remarkably dense, consisting of star-hairy 

 minute setules ; valves inside glabrous and shining ; septum of 

 each valve straight and firm ; descendingly tranverse, slight 

 elevations between the seeds, but no distinct septules ; seeds 

 about one-twelfth inch long, oblique- or truncate-ellipsoid, 

 smooth, brown-black outside and not shining. 



This species is nearest allied to C. sidoides, but very different 

 in its fruit, standing as regards the main characteristics of 

 the latter quite alone ; some affinity of our new plants to 

 C. echinatus is also obvious, but that species is rendered by the 

 septicidal dehiscence of its fruit-capsule somewhat anomalous 

 in the genus Corclwrus and verges much towards Triumfetta. 

 Indeed, for limiting these two genera we can best rely on the 

 structure of their fruits, and if from that the main distinc- 

 tions are to be derived then T. pilosa among Australian species, 

 as well as some African and other congeners, would need to be 

 transferred from Triumfetta to Corclwrus, as to some extent 

 pointed out already in 1863 (Fragm. Phytogr. Austr. IV., 29). 



In bestowing on so humble a plant the name of Sir Thomas- 

 Elder, I should remark, that this floral novelty is the most 

 interesting gained during the expedition, which through the 

 special aid of this munificent promoter of all interests of 

 South Australia has been enabled to shed additional light 

 also on the Central Australian flora. 



