THE FLORA OF THE NORTHERN TERRITORY. 3& 



Upper Victoria River and M'Adam Range, F. v. Mueller ; Escape Cliffs, 

 Hulse ; Sweers Island, Henne ; Port Darwin, Schultz (Nos. 146, 192, 662, 784, 

 801) ; Port Essington, Armstrong. 



32. P. semitonsum, F. v. M. — ^Victoria River, Elsey ; Near Providence 

 Hill, F. V. MueUer. 



33. P. stenostachyum, Benth. — Upper Victoria River, F. v. MueUer. 



34. P trachyrhachis, 5ewife.-^ Victoria River, Elsey ; Port Darwin, 

 Schultz (No. 343) ; Amhem's Land, M'Kinlay. Coolibar grass. 



35. P. trichoides, Sw. — Port Darwin, Schultz. (No. 264). 



P. tubulatum, Haeck. ; P. brevifolium, Linn. ; P. effusum, R. Br. ; P. 

 Mitchelli, Benth. ; recorded in National Herbarium Census from North Aus- 



18. SET ARIA, Beauv. 1807. 

 {Iscyphorus Schhcht, 1861-2). 



Fruiting glume transversely rugose. AwnUke panicle-branches, scabrous, 

 with erect teeth. 



Panicle cylindrical, simple, 1 to IJ in. long, the spikelets soHtary 



at the base of the awn-hke branches. — 1. S. glauca. 

 Panicle dense or interrupted, 3 to 8 in. long, the spikelets clustered 

 near the base of the awnlike branches. — 2. S. macrostachya. 

 Fruiting glume smooth. Spikelets more or less clustered. 



Awnlikp, panicle branches, scabrous, \^ith erect teeth. — 4. S. viridis. 

 Awnlike panicle branches, scabrous, \Vith reversed teeth. — 3.S. 

 verticillata. 



1. S. glauca, Beauv. — Batchelor Farm, G. F. Hill (2nd Series, No. 40), 

 23/2/1913. 



Recorded by various collectors from numerous locahties. Pigeon grass. 

 A good fodder. 



2. S. macrostachya, H. B. K. — Hermansburg, Finke River, G. F. Hill 

 (No. 79), 12/3/1911. 



Recorded. Port Darwin, Schultz (No. 272). Good fodder. 



3. 8. verticillata, Beauv. — Dampier's Archipelago and Nichol Bay, Walcot. 



4. 8. viridis, Beauv. — Five-mile Bar Camp, MacArthur River, G. F. Hill 

 (No. 702), 30/12/1911. 



Dampier's Archipelago, A. Cunninghan. 



19. CENCHRUS, Linn. 



Leaves glabrous. Involucre under 4 lines long, the inner bristles or lobes 

 lanceolate, not cihate, inflexed when in fruit. — 2. C. inflexus. 



Leaves softlj^ villous. Involucres 5 lines long, the inner bristles or lobes 

 shortly cihate. Spikelets usually three. — 1. C. elymoides. 



1. C. elymoides, F. v. M. — Sturt's Creek, F. v. MueUer; Port Darwin, 

 Schultz (Nos. 59, 193). A coarse tropical fodder grass. 



2. C. inflexus, R. Br. — ^Arnhem N. Bay, R. Brown. Hillside Burr 

 Grass. 



C. tribuloides, £.— Darwin, G. F. HUl, (2nd Series, No. 57), 1/4/1913. 

 An introduced alien. 



20. PENNISETUM, Rich. 

 1 . P. arnhemicum, F. v. m. — Upper Victoria River, F. v. MueUer. 

 P. refractum, F. v. M. ; recorded in National Herbarium Census from North 

 AustraUa. 



