256 



THE TASMANIAN FLORA. 



xxi. Empty glumes unequal,,.-. 



Em^pty glumes equal or nearly so 

 xxii. One small glume outside the pair of empty ones 



The empty pair of glumes very unequal 

 xxiii. Spikelets flat ^ ... ... ... ... 



Spikelets oylindric 

 xxiv. Outer glumes winged, unawned ... 



Outer glumes with short awns, not winged . . . 



XXV. Spikelets stiff, 4-6 lines long, crowded in a 



dense cylinder ... ... ... • ;.. 



Spikelets under 3 lines... ... ,.*..• 



xxvi. Outer glumes polished, not consistently, 

 persistent after the fall of the fruit. . . 

 Fruiting glume parting from the rhachis when 

 the fruit' is ripe, the outer empty glumes 

 remaining persistently attached 

 xxvii. Outer glumes with, a smooth, shining, enlarged 

 base ... ... ... ... ■ 



Pale absent ... ... ..,. ... ... 



Pale present .... 



xxviii. Panicle loose 



Panicle nearly cylindric 

 xxix. Spikelet under 3 lines ... 



Spikelet 3-8 lines 

 XXX. Small, nearly white 



Pale and softly downy .. . 

 Glumes dark 

 xxxi. Spikelets 2-flowered 



Spikelets 3-flowered, the 2 lower ones male... 



xxxii. Flowering glume simple, but with a dorsal awn 



Flowering glume with a pair of awn-like 



extensions besides the dorsal awn... 

 Dorsal awn as long as the glume 

 Dorsal awn short or none 

 Flo^vering glumes awned 

 Flowering glumes unawned 

 Awn dorsal. Glume with 2 terminal awn-like 



points ... 

 Awn formed by the continuation of the glume 

 xxxvi Flowering glumes all included in the outer 

 empty pair 

 Flowering glumes not eticlosed 

 xxxvii. A minute lobe on each side of the awn. 

 Inflorescence spreading 

 Awn terminal. Inflorescence a one-sided erect 

 panicle 

 xxxviii. Spikelets much flattened 



Spikelets not conspicuously flat 

 xxxix. Spikelets 3 or 4, unisexual 



Spikelets numerous, in dense clusters, forming 



a one-sided dense panicle 

 Inflorescence loose 

 xl. Spikelets I inch long, hard 



Spikelets 4 lines. Glumes pale, hard, rather 

 obtuse ... 



XXXlll. 



xxxiv. 



XXXV. 



x;£ili, 



1. Panicum. 

 14. Anthoxanthu 

 xxiv. . 

 xxy. ! 



12. Phalaris. 



13. Phhum. 



22. Pmnnm. 

 xxvi. 



32. Sporoholvs. 



xxvii. 



21. Oaatridium. 



19. Agroatis.. 



20. Deyeuxia. 

 xxix. 



xxxiii. 



XXX. 



xxxii. 

 23. Aira. 

 '24. Holms. 

 xxxi. 



25. Deschampsia. 

 15. Hkrochloe. 



27. Arrhenatherum. 



29. Danthonm. 



26. Trhetum. 



36. Kmlaria. 



XXXV. 



xxxviii. 



xxxvi. 

 xxxvii. 



28. Danthonia. 



29. Amphibvomus. ' 



42. Bromus. 



44. Festuca. 

 xxxix. 

 xli. 

 35. Distichlis. 



37. Dactylis. 

 xl. 



43. Ceratochba. 



39. Schedonorm. 



