339 



present specimens Vjlunt or rounded or even cordate at the base ; 

 the crenulation often extending all round. The P. densijiorus 

 (Edm. Baker, in Britten's Journ. of Bot., XXX., 72) is more 

 closely related to P. glomeratus. Mr. Isaac Tyson found it also 

 on the Upper Murchison River. Calyx-lobes shorter than the 

 tube. Petals almost scarious. Anthers at first pure white, finally 

 yellowish. A more glabrous form was collected by F. v. M. at 

 Hamelin Harbor. 



Plagiaxthus Bertii/E, F. v. M. Near Fraser Range (C. 68), 

 only the pistillate plant. A fragment of this species occurred in 

 James Drummond's collection. It is now also known from 

 Parker Range (Merrall), Katanning (Mrs. M. Heal), towards 

 Lake Lofroy (Cronin). In South Australia this plant is usually 

 more glabrous, and its flower-stalklets are more elongated. 



Plagianthus Helmsii, spec. nov. W.A., Lake Lefroy ; Mur- 

 chison district; native name, "■ dunna-chinna.^' Also Lake 

 Annean (Mr. S. Dixon, 10/'93). 



Stem robust, branchless or few-branched, all over closely beset 

 with fascicles of minute, mostly oval lanceolar, pale-lepidote, 

 somewhat canaliculate leaves ; stipules conspicuous, truncate or 

 outward acuminate, ciliolate, adnate to the broad petioles : 

 flowers very small, each solitary, sessile within a leaf-fascicle ; 

 calyx lepidote, almost semiellipsoid, but its lobes extremely 

 short ; petals delicately membranous, glabrous, extensively 

 transparent, almost colorless or brownish towards the summit, 

 less than half-exserted ; staminal column very short, anthers 

 whitish, not numerous (pistillate flowers and their fruits 

 unknown). 



This shares with P. inicrophyllus in the characteristics of 

 leaves and flowers, but with ]'. spicatus in the simple manner of 

 growth. The leaves are quite entire, often folded from tlie sides 

 inward, and sometimes arched-curved. 



SiDA CORRUGATA, LindUy. W.A., Mount Squires, Fraser 

 Range. Var. pedunculata, S.A., Arcoeillina Well. 



SiDA isTEiCATA, F. V. M. S.A., Nilpena. 



SiDA viiiGATA, Hooker. S.A., between Nilpena and Coota- 

 noorina. 



SiDA OALYXHYMEXIA, J. Gay. S.A., ArcoeiUina Well ; W.A., 

 Camp 61, Fraser Range ; lat., 27° 3', long., 124° 6' {D. Gumming). 



SiDA PETEOPHILA, F. V. M. S.A., Upper Ai-karinga Valley ; 

 West from Wawee water-hole ; Everard Range at 3,000 feet ; 

 Peculiar Hill (C. 15). 



Abutilox tubulosum, Hooker. &.A., Warrina : near Turner 

 Hill (C. 10); Peculiar Hill (C. 15). 



Abutilon- ceyptopetalum, F. v. 31., variety with large white 

 petals. W.A., Victoria Desert (C. 53). 



