336 PLANTS OF CENTRAL AUSTRALIA 



few cases both in Grevillea and Hakea, but which I beheve 

 to be important, as it not only expresses a difference of 

 form, but also in general of vascular arrangement. 



25. Ptilotus {latifolius) capitulis giobosis, bracteis pro- 

 priis calycem snperantibus, foliis ovatis petiolatis. 



Loc. " In lat. 26° S." D. Sturt. 



Desc. Herba diffusa, ramosa, incana. Folia alterna, 

 petiolata, late ovata, integerrima. Capitula ramos termi- 

 nantia^ solitaria vel duo approximata. Bracteae laterales 

 scariosse, sessiles, late ovatse, enervisc. Perianthium ; foliolis 

 snbeequalibus, lana implexa alba basi tectis, ante expan- 

 sionem ungue nervoso tunc brevissimo, post anthesin 

 laminam scariosam enervem fere sequante. Stamina 5 

 antherifera ; filamenta basi in cyathulum edentulum con- 

 nata. Antheres biloculares, loculis utrinque distinctis medio 

 solum conjunctis. Ovarium monospermum, glabrum. Sty- 

 lus fihformis, glaber. Stigma capitatum, parvum. Utri- 

 culus evalvis; ruptilis. 



Obs. I was at first inclined to consider this plant as a 

 genus distinct from Ptilotus, more, however, from the re- 

 markable difference in habit than from any important dis- 

 tinction in the flower, for its character would have chiefly 

 consisted in the great size of its lateral bractese, and in the 

 form of its antherae. 



In a small collection formed during the voyage of 

 Captains Wickham and Stokes, there is a plant very nearly 

 related to, and perhaps not specifically distinct from, Pti- 

 lotus latifolius, but having narrower leaves. It was found 

 on one of the islands of Dampier's Archipelago. 



89J 26. Neurachne [jjciradocva) glaberrima, culmo dicho- 

 tomo, foliis rameis abbreviatis, fasciculis paucifloris, glumis 

 perianthiisque imberbibus valvula exteriore cujusve floris 

 septemnervia. 



Loc. Nulla indicatio loci v. stationis^ in Herbario D. 

 Sturt. 



Desc. Gramen junceum, facie potius Cyperacese cujusdam. 

 Polia radicalia in specimine unico viso defuere ; ramos sub- 



