338 



Tribulus tebkestris, Linni'. S.A., Warrina (G. 11) ; W.A., 

 near Mount Squires. 



Tribulus hystrix, R. Broivn. S.A., Warrina. 

 If T. occidentalis, R. Brown, can be upheld as a distinct species, 

 then the Warrina specimens belong to it — having the large petals 

 (one inch or more long), numerous leaflets (9 to 12) and subulate 

 spines on the fruit, which are attributed as distinctive characters 

 by Mr. Bailey. But a re-examination of copious material con- 

 firms the decision arrived at, and promulgated by one of us 

 (F. v. M.) in the Essay on the Babbage-plants, and subsequently 

 adopted by Bentham, that T. occidentalis has no claim to specific 

 rank ; an analagous case is with T. cistoides, winch represents a 

 large-flowering state of T. terrentrig. 



The following localities of T. hystrix, as represented by 

 authentic specimens in our herbaria, serve to define the 

 geographic distribution of this characteristic Eremian plant : — 



N.W.A., Yule Gorge, Pyramid and Sherlock Bivers (Hon. 

 Sir J. Forrest); Roebuck Bay (A. Forrest); Dampier Archi- 

 pelago (Walcott, Hughan) ; Port Walcott (Harper) and interior 

 from Nichol Bay (F. Gregory) ; Fortescue River (Carey, also J. 

 Forrest); Gascoyne River (Bunbury, Survey Exped., also J. 

 Forrest) ; Menilyalka River (J. Forre.st). C.A., Barrow Creek 

 (Chandler) ; MacDonnell Range (Flierl) ; Rawlinson Range (E. 

 Giles) ; Lake Amadeus (E. Giles) ; Finke River (R. E. Warbur- 

 ton, MoDougall Stuart) ; Eyre's Creek (Kayser) ; Cooper-Creek 

 (Howitt, also McLeod) ; Stevenson Creek and Charlotte- Waters 

 (Dittrich) ; towards Spencer-Gulf (Warburton) , Straugway- 

 Spring (Dr. Cleland). 



Tribulus macrooakpus, F. v. M. W.A., near Mount Squires. 



Tribulus platypterus, Bentham. W.A. ; lat. 26° 49', long. 

 123° 30' (D. Gumming). 



GERANIACEAE. 



Eeodium cygnorum, Nees. S.A., Cootanoorina, Arkaringa 

 Valley ; also at these localities a variety with pinkish flowers and 

 slightly lobed leaves ; Everard Range. W.A., Fraser Range. 



OxALis CORNICULATA, Linnl S.A., Arkaringa Valley ; W.A., 

 Fraser Range ; native name, " mulda nmlda." 



MALVACE^. 



Lavatbba PLEiiEiA, Sims. W.A., V-'ictoria Spring, Fraser 



Range. . 



Malvastkum spica'L'um, a. Gray. S.A., Arkaringa Valley, 



Mount Watson. , 



Plagiantiius uiffusos, Bentham. ^' .A., near Hunts Well, 

 Hampton Plains. Leaves seemingly never much cuneated, in the 



