406 gbaminEjE. [Graminea. 



Palea scarcely ciliate. 



Flowering glume awnless, with a small scale or 



oblong scar on each side at the base .... 6. Ichnanthus. 

 Flowering glume without appendages at the base, 



awnless or with a straight awn 4. Panicvm (9 to 16). 



Flowering glume with a twisted awn . . . .10. Arundinella. 

 Spikelets either in pairs, 1 sessile the other pedicellate, form- 

 ing pedicellate spikes, or ] sessile between 2 pedicel- 

 late, on a common pedicel. Flowering glumes very 

 thin, transparent, with a twisted awn or rarely awnless. 

 Panicle with sheathing bracts at its ramifications. 



One sessile and 2 pedicellate spikelets in each bract . 24. Apluda. 



Two short spikes in each bract 25. Andropogon (6). 



Panicle without bracts. 



Outer glumes thin, enveloped in long silky hairs. Pa- 

 nicle large. 



Rhachis articulate. Spikelets awnless 19. Saccharum. 



Rhachis continuous. Flowering glume awned . . 20. Eulalia. 

 Outer glumes stiff, usually longer than the outer hairs. 



Spikelets in pedicellate spikes 25. Andropogon (3 to 5). 



Spikelets in threes, 1 sessile between 2 pedicellate . 27. Chrysopogon. 



B. Spikelets with 2 or more hermaphrodite or fertile flowers, or the uppermost unisexual. 



1. Spikelets all pedicellate and panicled. 



Awns long and twisted. (Spikelets large) ...... 41. Avena. 



Awns none or short and straight. 



Flowering glumes surrounded by long dense silky hairs. 

 Tall Reeds with large panicles. 



Lowest flowers all fertile 33. Arundo, 



Lowest flower male 34. Phragmites. 



Hairs few or short or none in the spikelets. 

 Spikelets small, with 2 flowers. 



Glumes of similar consistence, the outer ones shorter 



and unequal. Panicle narrow 42. Ccelachne. 



Flowering glumes firmer than the 2 outer equal ones. _ 



Panicle short, spreading 7. Isachne. 



Spikelets flat, with 3 or usually many more flowers . 43. Eragrostis. 



2. Spikelets sessile, in 1 or 2 rows along one side of the spike-like branches of a simple 

 panicle. 



Spikes digitate. 



Spikelets awnless or with short points. 



Spikelets very flat, closely imbricate. Glumes shortly 



pointed 37. Dactyloctenium. 



Spikelets narrow. Glumes obtuse 38. Eleusine. 



Awns longer than the glumes 39. Chloris. 



Spikes alternate or clustered in a long panicle 40. Leptochloa. 



3. Spikelets (awnless) sessile, irregularly cltistered or solitary, in simple or branched 

 panicles. 



Herbs with small flat spikelets 43. Eragrostis. 



Tall shrubby or tree-like Bamboos, with large spikelets. 



Stamens 3 45. Arundinaria. 



Stamens 6. 



Several fertile flowers in each spikelet . . . . . 46. Bambusa. 



One fertile flower in each spikelet 47. Schizostachyum. 



Among the Tribes adopted by Colonel Munro for the distribution of the numerous genera 

 of Graminea, the following 11 are represented in our Flora: — 



