317 



NOTES ON THE BOTANY OF THE INTERIOR OF 

 NEW SOUTH WALES. 



By R. H. Cambage. 



(Plates xx.-xxi.) 



Part IV. — From Mount Hope to Parkes. 



The road taken from Mount Hope to Condobolin was across 

 Wirchilleba, Eremeran, and part of Melrose Stations, keeping 

 back from the Lachlan River all the way. 



In passing between Mount Allen and Double Peak, which are 

 two hills situated about four miles apart, it was noticed that on 

 the former there was a considerable quantity of Casuarina 

 quadrivalvis (She Oak), but not a single tree of it was found on 

 the latter. Sterculia diversifolia (Currajong) was also much 

 more plentiful on the former than on the latter. On the other 

 hand, Acacia doratoxylon (Currawong) was found covering the 

 heights of Double Peak, its straight stems standing out against 

 the sky-line along the top of the ridge giving it the well known 

 hog's-neck appearance; while on Mount Allen the species does 

 not appear to be represented at all. The formation of Mount 

 Allen is igneous, apparently porphyry, while that of Double 

 Peak, also known as Dromedary, is Silurian slate, with a few 

 belts of porphyry. 



Various trees and shrubs noticed between Double Peak and 

 Wirchilleba Homestead were : — Callitrls robusta (White or 

 Cypress Pine), Heterodendron oleoefolium (Rosewood), Fusamts 

 acuminatus (Quandong), Hakea leuco'ptera (Needlewood), JBe^'ti/ a 

 Citnninghamii (Broom Bush), Bosskea sp., Triodia irritans 



