97, 



TUBIFLORiE. 



CONVOLVULACE^. 



518. Ipomaea costata F. v. M. 



Sherlock and Fortesciie Rivers (J. Forrest) ; Lennard and Isdell 

 Rivers; between Mt. Eliza and Inglis' Gap (W.V.F.). 



Stems twining or rambling for many feet or the plant erect; 

 bushy and 3-1 Oft. in height. In sandy loam. 



519. /. reptans Poiret. 



Gascoyne River (J. Forrest) ; May and Meda Rivers; in a 



billabong near Meda Station (W.V.F.). 

 Stems hollow, prostrate for several feet; flowers small, white. 



In black muddy spots. Includes I. aquatica Forskael. 



520. I. diversifolia R. Br. 



Roebuck Bay (J. W. 0. Tepper) ; Meda, Lennard, and Fitzroy 



Rivers; near Derby (W.V.F.). 

 In sandy loam. 



521. I. eriocarpa R. Br. 



Roebuck Bay (J. W. 0. Tepper) ; Meda, May, Lennard, Fitzroy. 



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

 Seeds punctate. In sandy soil. 



522. I. flava F. v M. 



De Grey River (Ridley's Expedition) ; Calder River, near Wal- 

 cott Inlet; King River near Cambridge Gulf (W.V.F.). 



Stems trailing or twining for many yards; flowers sulphur- 

 yellow. The specimens referred to in the Flora Austral- 

 iensis as having been collected by Ridley's Expedition in 

 all probability do not belong to this species. 



523. /. turpethum R. Br. 

 Port Hedland (W.V.F.). 



Stems twining for several feet; flowers white. In sandy soil. 



524. /. plebeia R. Br. 



Adcoek, Isdell, Hann and Barnett Rivers (W.V.F.). 

 Flowers white. In stony and sandy spots. 



525. Polymeria ambigua R. Br. 



^leda, Lennard, Isdell and Fitzroy Rivers; near Derby 



(W.Y.F.). 

 In sandy loam. 



526. P. angustata F. v M. 



Roebuck Bay (J. W. 0. Tepper) ; May, JMeda, Lennard and 



Fitzroy Rivers (W.V.F.). 

 In sandy spots. 



