374 97. GRAMINES. 
much broader. Stigmas protruding from the side of the 
florets. Nut inclosed in the pales. 
Tr. IX. SESLERIE 4. Spikelets laterally compressed, with 
2 or more fl., without hairs. Styles 0 or very short. Stigmas 
very long, filiform, protruded from the summit of the florets. 
22. SesnERIA. Panicle spiked; spikelets sessile, tiled all 
round. Glumes 2—6-flowered, nearly or quite equalling 
the spikelet. Outer pale keeled, membranous; with a sca- 
rious margin, ending in 3 or 5 points, dorsal rib evanescent. 
Ty. X. AVENE. Spikelets with 2 or more florets (except in 
Lagurus), upper often barren. Glumes equalling (or nearly) 
the spikelet. Fl. usually swrounded by steff hairs. Awn 
twisted and kneed (wanting in our Triodia). 
23. Lacurus. Panicle spiked. Glumes 1-flowered, scarious, 
ending in a long fringed seta. Outer pale ending in 2 long 
setze and with a dorsal kneed twisted awn. 
24. Arra. Panicle lax. Glumes 2-flowered, with or without 
the rudiment of a third (which is sometimes perfected in 
A. cespitosa). Outer pale terete on the back with or with- 
out very faint lateral nerves, awned. Awn dorsal, kneed (in 
A. cespitosa straight). Ovary glabrous. Fr. not crested. 
25. CorYNEPHORUS. Awn clubshaped, straight, jointed mn 
the middle, the upper portion clavate, a tuft of hairs at the 
jomt. Otherwise like 4ira. 
26. Trisetum. Spikelets crowded. Glumes 2—6-flowered. 
Outer pale keeled with faint lateral nerves, ending in 2 acute 
teeth, awned. Awn dorsal, kneed and twisted. Ovary gla- 
brous. Fr. neither crested nor furrowed. 
27. Avena. Glumes 2+ or more-flowered. Outer pale with 
lateral nerves, awned, ending in 2 points. Awn dorsal, 
kneed and twisted. Ovary hairy at the top. Fr. crested 
and furrowed. 
28. ARRHENATHERUM. Glumes 2-flowered with a rudiment, 
lower fl. male with a long dorsal kneed and twisted awn, 
upper with a short straight awn. Pales herbaceous, ending 
in 2 points. Ovary hairy at the top. Fr...... 
29. Hotcus. Glumes 2-flowered, lower perfect awnless (or 
very rarely awned), upper usually male with a dorsal awn. 
Pales hardening on the fruit. 
30. Trrop1a. Glumes 2—3-flowered. Outer pale rather 
coriaceous, smooth, rounded on the back, bifid with an in- 
