GHAMINEJE. 
351 
not keeled, blunt. El. 1. Palesc 2, scarious, very hairy, 
obtuse, unequal, without awns. 
Tr. IV. AGROSTIDE/E. Spikelets and glumes as in Tr. III. 
Stigmas sessile or nearly so. Inflorescence panicled. 
10. Gastuidium. Glumes membranous, acute, unarmed, 
ventricose at the base, much longer than the flower. Fl. 1. 
Paleoe 2, membranous ; lower truncate or toothed at the end, 
with or without a dorsal awn. 
11. Polypogon. Glumes scarious, nearly equal, each fur- 
nished with a long seta from just below the emarginate sum- 
mit. Palea: shorter than the glumes, outer usually awned 
from below the summit. 
12. Milium. Glumes membranous, nearly equal, unarmed. 
Palece 2, nearly equal, unarmed, about as long as the glumes, 
hardening on the fruit. Spikelets convex on the back, or 
slightly dorsally compressed. 
13. Agrostis. Glumes membranous acute, unarmed, the upper 
one smaller. Palece unequal, scarious, with or without a 
dorsal awn, shorter than the glumes. Seed free. — In A. 
canina the inner palea is wanting. 
14. Apera. Spikelets with the rudiment (pedicel) of a supe- 
rior floret. Lower glume the lesser, 1 -nerved ; upper larger, 
3-nerved, about as long as the lower palea. Otherwise like 
Agrostis. 
[Tr. V. STIPACEjE. Spikelets in an equal panicle, 1 -flowered, 
without any rudiment. Outer palea convolute and hard- 
ened upon but not attached to the fruit, the extremity rolled 
up and jointed to a long awn.] 
[15. Stipa. Florets stalked. Palea? coriaceous, the inner 
entire. Awn evidently jointed to the palea, kneed and 
twisted.] 
Tr. VI. AR UNDINE A3. Spikelets laterally compressed, 1- 
flowered, or with a superior rudiment, or many-flowered. 
Fl. enveloped in long silhj hairs. Styles and stigmas various. 
" Awn not twisted." 
16. Arundo. Glumes nearly equal, the hirer rather the 
longer. Floret 1, with or without the superior rudiment 
of another reduced to a pedicel. Outer palea awned. Pa- 
nicle diffuse. Styles short. Stigmas feathery. 
17. Ammophila. Glumes nearly equal, the lower rather the 
shorter. Floret 1, with a superior rudiment of another. 
Outer palea with a short awn. Panicle spikelike. Styles 
short. Stigmas feathery. 
