THE FLOBA OF THE NORTHERN TERRITORY. 25 



Spikelets several- flowered, awnless, in a single or in scattered spikes. 

 Flowering glumes with a minute point between 2 small hyaUne lobes. — 40. 

 Diplachne. 



Sub-tribe III. — Miliese. Spikelets 1 or 2- flowered in a loose or narrow dense 

 panicle, the rachis of the spikelet not produced above the upper flower. Outer 

 glumes usually convex, several-nerved or almost nerveless, unawned. Flower- 

 ing glumes nearly similar, unawned or with 1 straight awn. Grain free. 



Rachis of the spikelet glabrous or nearly so. Outer glumes faintly nerved. 

 Flowering glumes unawned. — ^28. Sporobolus. 



Rachis of the spikelet hairy round the flowering glumes. 



Spikelets 2-flowered. Outer glumes many-nerved. Flowering glumes 

 awned or unawned. — 29. Eriachne. 



Sub-tribe IV. — Festucacese. Spikelets several, often many- flowered in a 

 loose or narrow or dense panicle or, capitate, the rachis of the spikelet usually 

 produced beyond the last flower or ending in an empty glume; Outer glumes 

 usually narrow acute, or rarely obtuse, unawned. Flowering glumes entire or 

 slightly notched, obtuse, acute, or the keel or midrib produced into a point or 

 straight awn. 



Empty glumes several, either above 1 or 2 flowering ones, or in a, separate 

 spikelet. 



Several empty unawned glumes above 1 or 2 flowering ones. Panicle 

 narrow and dense or loose and spreading. — 42. Ectrosia. 



Many empty glumes above 1 flowering one, all unawned. Panicle con- 

 tracted into a dense sessile head or interrupted spike. — 43. Heterachne. 



Only 1 empty glume above the flowering ones, sometimes rudimentary or 

 deficient. 



Spikelets usually flat, the flowering glumes keeled entire. — 38. 



Elytrophorus. 

 Spikelets usually many- flowered. Flowering glumes 3-nerved. — 



41 . — ^Eragrostis . 

 Spikelets few- flowered. Flowering glumes 5-nerved. — 44. Poa. 



Sub-tribe V. — Hordeacese. Spikelets 1 or several- flowered, sessile on the 

 opposite sides of alternate notches of the rachis of a simple spike. Glumes 

 entire, awned or unawned. — 45. Lepturus. 



1. CHIONACHNE, R.Br. 1838. 



1. C. cyathopoda, F. v. M.—Okej Creek. G. F. Hill (782), 16/2/1912. 

 Recorded. Upper Victoria River, Hooker and Sturt's Creeks, F. v. M. ; 

 Gulf of Carpentaria, Landsborough. 

 Common food of large birds. 



2. DIMERIA, R.Br. Domithopoda, Trin. 

 1. Dimeriatenera,Trin. — ^Port Darwin, Schultz (No. 321.) 



3. IMPERATA, Cyr. 

 3. /. arundinacea, Cyr. — Gulf of Carpentaria, R.Br. 



4. POLLINIA, Trin. 1833. 



(Dactylus, Burm., 1768. Eulaha, Kunth, 1829. Leptatherum, Nees, 

 1841. Mcrostegium, Nees, 1836. Nemastachys, Steud., 1855.) 



Third glume very small and hyaline or none. Awn contracted at the base 

 into a narrow flexuose stipes. 



