10 



orbicular ; anthers 6, all perfect ; carpels 3, quite free 

 from the base ; not tapering upwards, all or 1-2 only 

 ripening, the stigma,s broad and slightly recurved ; fruit 

 sessile or shortly stipitate, compressed ; oblong-lanceolate 

 to lanceolate, falcate, terminating in a broad, usually 

 straight beak, the inner and outer edges expanding into 

 narrow longitudinal wings. 



Isdell and Charnley Rivers (W.V.F.). 



Leaves and scapes 2-5 or more feet in length. Inflorescence 

 4r-12in. long, perianth-segments l-ljin. long ; yellowish. 



Fruits Jin. long, yellow or purplish when ripe. 



In still water. 



Affinity to T. prooera, R. Br. 



ALISMATACE^. 



24. Alisma oligococcum F. v. M. 



King Sound District (Froggatt) ; Lennard and Barker Rivers 



(W.V.F.). 

 In still water, rooting in mud ; scapes l-2ft. high ; flowers 



white. 



HYDR0CHARITACE.4:. 



25. Maidenia rubra (W.V.F.) Rendle. 



See ' "Maidenia " a new genus of Hydrocharitaceae,' by A. B. 

 Rendle, D.Sc, F.R.S., with a plate (Journ. Bot., Vol. 54, 

 p. 313, Nov., 1916). 



VALLISNERIE^. 



26. Vallisneria spirahs L. 



May, Meda, Lennard, Fitzroy and Isdell Rivers (W.V.F.) ; 

 Margaret River (C. Andrews). The Margaret River here 

 mentioned is in the South-West and not the tributary of 

 the Fitzroy River known tinder that name. 



GLUMIFLORiE. 



GRAMINE^. 

 ANDROPOGONE^. 



27. Andropogon afflnis R. Br. 



Fraser Ranges (Dempster) ; Lennard, Fitzroy, Isdell, Harm, 



and Charnley Rivers (W.V.F.). 

 Csespitose, reed-lUce, 6-8ft. in height. 

 In sandy loam and black soil. 



28. A. procera R. Br. 



Ciijspitose. The lemon-thyme scented rhizomes are used by 

 the aborigines of N.W. Australia in the preparation of an 

 infusion which is drunk by them as a specific for colds, 

 and reputedly has a beneficial effect. 



In black soil and sandy loam. 



