224 THE FLORA OF THE NORTHERN TERRITORY. 



1. GYMISTAJSTTHERA, R. Be. 



1. G. nitida, R. Br. — Islands of the Gulf of Carpentaria, R Brown; 

 Sandy Island, Victoria River, F. v. Mueller ; Sweers Island, Henne ; Forster's 

 Range and Daly Waters, Waterhouse. 



2. CYNANCHUM, Linn., 1737. 



(Diploglossum, Meissn., 1840 ; Endotropis, Endl., 1838 ; Exostegia, Boj., 

 1844 ; Psanchum, Neck., 1790 ; Symphyoglossum, Turcz., 1848 ; Ziervoglia, 

 Neck., 1790 ; Vinoetoxicum, Mnch. ; Cynoctonum, E. Mey ; Orthosia, Dene. ; 

 Blyttia, Arn. ; Seutera, Rchb. ; Cyathella, Dene. ; Bunburya, Harv. ; Lyonia, 

 BL). 



Corona of 5 segments, quite distinct In the Australian species (Vinoetoxi- 

 cum). — 1. C. camosum. 



Corona with 5 or 10 marginal lobes and 5 or 10 additional protuberances 

 or lobes inside the margin. 



Corona-lobes 20, subulate-acuminate, much exceeding the anthers. 



No stipule-like leaves. — 2. 0. floribundum. 

 Corona lobes 20 ; 10 short, obtuse, denticulate or partially acuminate, 

 and 10 inner rather longer acuminate keels. A pair of stipule- 

 like leaves usually at the base of the petioles. 

 Glabrous or the inflorescence minutely pubescent. — 3. C. 



pedunculatum. 

 Whole plant softly pubescent. — 4. 0. puberulum. 



1. C. camosum (Benih.) Schum. — Cygnet Bay, N. W. Coast, A. Cunning- 

 ham ; Victoria River, F. v. Mueller ; islands of the Gulf of Carpentaria", R. 

 Brown. 



2. C. floribundum, JR. Br. — Charlie Creek, Macdonnell Ranges, G. F. Hill 

 (173), 14/5/1911. 



Recorded. Nichol Bay, N. W. Coast, Gregory's Expedition. 



3. C. pedunculatum, R. Br. — Montague Sound, N. W. Coast, A. Cunning- 

 ham ; Victoria River, F. v. Mueller ; islands of the Gulf of Carpentaria, R. 

 Brown. 



4. G. puberulum, F. v. M. — -Rocks, upper Victoria River, F. v. Mueller. 

 C. elegans, Benth. ; recorded from North Austraha in National Herbarium 



Census. 



3. SARCOSTEMMA, R. Br. 



1. S. australe, R. Br. — Intercourse Island, Dampier's Archipelago, A. 

 Cunningham. 



Caustic-vine ; a noxious weed, poisonous to stock. 



4. PENTATROPSIS, R. Br., 1814. 



(Eutropis, Falc, 1839 ; Rhyncharrhena, F. v. M., 1859.) 



1. P. quinquepartita, Benth. {Daemia quinquepartita, F.v. M.). — Lat. 29° 

 27', Survey Route, G. F. Hill (430), 3/7/1911. 



5. SECAMONE, R. Br. 



Leaves ovate-acuminate or lanceolate. — 1. S. elHptica. 

 Leaves ovate, obtuse or scarcely acute. — 2. S. ovata 



