BY BARON VON MUELLER, K.C.M.G,, M.D., F.R.S. 193 



Jacksonia Clarkii, n, sp. 



Almost glabrous ; branchlets rather slender, conspicuously 

 angular ; flowers comparatively large ; stalklets about half as 

 long as the calyces ; bracteoles near the middle of the stalklets ; 

 flower- buds almost blunt, minutely pointed ; calyces divided to 

 near the base, about as long as the corolla, the segments glabrous, 

 except at the margin, soon deciduous ; petals of nearly equal 

 length ; anthers ovate-roundish ; style setaceous, glabrous, 

 deciduous ; fruit on a rather long stipes, lanceolar-elliptical, almost 

 silky. 



On the Upper Hastings River (Dr. Herm. Beckler) ; on the 

 Upper Delegate River (IVTr. A. Clarke). 



Nearest allied to this plant is the Jacksonia scoparia, which 

 however is always more or less silky, has much smaller flowers 

 upwards acutely attenuated while in bud, the bracteoles nearer to 

 the calyx, the latter never glabrous, but long or even permanently 

 persistent, the anthers narrower, the style at least partially silky 

 and not deciduous, and the fruit smaller. 



J. scoparia is now also known from the Nepean River (Dr. 

 Cox), Trial Bay (Betche), Shoalhaven River (Weir). 



J. thesioides has more recently been gathered on the Boyne 

 River (A. Wentw. Watson), at Glenroy (Stafford), Goode Island 

 (Powell), Cleveland Bay (H. Gulliver). 



J. nematoclada occurs between the Murchison River and Shark's 

 Bay (F. v. M.). 



J. odontoclada grows also near the Lynd River (E. Palmer). 



J. Sternhergiana attains on the Greenough and Irwin River, a 

 height of 40 feet. Pastoral animals browse on the branchlets ; 

 wood of disagreeable odour. This species extends southward fully 

 to the Serpentine River, northward to Port Gregory (F. v. M.). 



J. densijlora was found by the writer also near the Serpentine 



River, where the calyces attain a length of f inch ; the Hon. 



John Forrest collected it at Mount Samson. 

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