78 GR AMINE AE. 59. Eragrostis. 



A. Spikelets very flat when mature, with a longitudinal 

 furrow between the 2 rows of glumes. 

 C Base of stems glabrous. 



D. Spikelets sessile or almost so, clustered. 

 E. Palea almost as long as flowering glume. 



Spikelets 2 mm. broad E. diandra 5. 



Spikelets 3 mm. broad E. concinna 6. 



E. Palea not \ as long as flowering glume E. speciosa 7. 



D. Spikelets shortly pedicellate in panicles. 



F. Leaves without glandular teeth E. Brownii 8. 



F. Leaves with glandular teeth. 



Spikelets 3 mm. broad E. major 9. 



Spikelets 2 mm. broad E. minor 10. 



C. Base of stems bulbous-woolly. 



Spikelets 3 mm. broad E. eriopoda 11. 



Spikelets 2 mm. broad E. setlfolia 12. 



A. Spikelets very narrow, almost cylindrical, not furrowed. 



Spikelets pedicillate, distant E. falcata 13. 



Spikelets sessile, clustered E. Dielsii 14. 



1. E. tenella (L.), Roem. et Schult. Erect annual 20-50 cm. high ; leaves flat ; panicle 

 occupying the greater part of the plant, with long or short spreading branches ; spikelets 

 4-8-flowered, 1-4 mm. long, 1 mm. broad, shortly pedicellate, often purplish; flowering 

 glumes obtuse, about 1 mm. long, loosely imbricate, the nerves prominent ; palea glabrous 

 or ciliate on the nerves ; rhachilla breaking up from the top downwards ; grain ovate- 

 oblong, \ mm. long. 



Far North. Spring. A very beautiful delicate grass. 



2. E. leptocarpa, Benth.. Resembles the preceding, but the spikelets are pale or lead- 

 colored, narrow-linear 3-6 mm. long, f mm. broad, 4-10 flowered, light or purplish ; 

 flowering glume obtuse, often notched, 2 mm. long ; rhachilla not disarticulating ; palea 

 ciliate on the nerves or almost glabrous, usually deciduous ; grain oblong linear, 1 \ mm. long. 



Far North and North-West ; Fowler's Bay. Most of the year. 



3. E. pilosa (L.), Beauv. Glabrous annual, often reaching 60 cm. ; leaves narrow; 

 panicle large and loose, with long spreading branches ; spikelets linear, 6-18-flowered, 

 3-10 mm. long, 1 mm. broad, usually lead-colored, on pedicels of 2-4 mm. ; rhachilla 

 not disarticulating ; flowering glumes closely imbricate, subacute, \\ mm. long, lateral 

 nerves faint ; paleas ciliate, persistant ; pedicels only slightly diverging, so that the spike- 

 lets lie almost parallel to the panicle- branches ; grain ovoid, £ mm. long. 



Murray lands ; Far North. Summer. 



4. E. trichophylla, Benth. Stems slender ; lower leafblades villous ; panicle rather 

 loose, about 15 cm. long ; spikelets linear, 8-12-flowered, 4-6mm long, 1 mm. broad, 

 light-colored or purplish ; glumes obtuse, If mm. long, the lateral nerves conspicuous ; 

 grain obovoid, \ mm. long. 



From Fowler's Bay northward. Summer. 



5. E. diandra, Steud. Leaves narrow, glabrous ; panicle an interrupted spike of 5-15 

 cm. : spikelets lanceolate, 4-7 mm. long, 2 mm. broad, 6-16-flowered, sessile in dense 

 sessile clusters, forming short distant branches towards the base of the panicle ; flowering 

 glumes white or purplish, with conspicuous green lateral nerves ; palea nearly as long ; 

 stamens 2, small, purple ; grain ovoid, \-\ mm. long ; rhachilla not articulate. 



Tanunda ; Bordertown ; Oodnadatta. 



6. E. concinna, Steud. Rather short grass, with flattish leaves, hairy at orifice of 

 sheath; panicle contracted, 4-10 cm. long; spikelets lanceolate, clustered, sessile, 8-16 

 mm. long, 3-4 mm. broad, very flat, 10-34-flowered, often purplish ; rhachilla finally 

 disarticulating ; flowering glumes 3 mm. long, with prominent nerves ; palea f as long as 

 the glume with long cilia on the nerves ; grain ovoid, £ mm. long. 



Country north of Lake Eyre. 



7. E. speciosa, Steud. Leaves subulate, glabrous ; panicle narrow, sometimes 25 cm. 

 long, the lower branches erect and distant ; spikelets finally linear, lead-colored, erect, 

 flat, 10-40-flowered, 6-12 mm. long, under 2 mm. broad, sessile or almost so ; palea ciliolate, 

 not \ as long as flowering glume ; grain ovoid, scarcely \ mm. long. 



Far North. 



8. E. Brownii, Nees. Leaves narrow, sometimes bearded behind the ligule ; panicle 

 3-15 cm. long, narrow or loose and spreading ; spikelets 5-9 mm. long, 2 mm. broad, 

 lanceolate, 6-18-flowered, shortly pedicellate, distant or clustered (in the latter case 

 approaching E. diandra) ; flowering glumes lead-colored, with conspicuous lateral nerves ; 

 palea nearly as long ; stamens 2-3 ; grain ovoid, almost globular, \ mm. long ; rhachilla 

 tardily articulate. 



Mount Lofty Range ; South- East. 



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