98. 9RiMINE-«l. 417 



29. AvENA.. Fl. 2 or more. Lower pale witli lateral veins, 

 awned, ending in 2 pointa. Awn dorsal, kneed and twisted. 

 Ovary hairy at the top. Fr. crested and furrowed. 



30. Abehknathbbttm. Fl. 2, with a rudiment ; lower fl. 

 male with a long kneed and twisted awn from helow its 

 middle; upper with a short straight awn from near the 

 tip. Pales nerhaceous, ending in 2 points. Ovary hairy 

 at the top. Fr. oblong, terete, downy, not furrowed. 



Tr. XI. FE8TUCEJE. Spikelets with 2 or more flowers, 

 upper often barren. 01. falling short of the lowest Jlower, 

 Style short or 0. 



t Lower pale with nearly parallel veins which do not join to form 

 an awn. Awn 0. Styles terminal. 



4- Lower pale 2 — 3-fid. 



31. Tmodia. Fl. 2 — 4. Lower pale rather coriaceous, 

 rounded on the back, bifid with an intermediate broad 

 point. Nut free. 



4.4. Lower pale nearly or qmte entire. 



32. £cELEEiA. Gl. unequal; upper 2 — 3-ribbed. Spikelet 

 compressed, 2 — 5-flowered. Lower pale keeled, acuminate, 

 or with a straight subterminal bristle. Nut free. 



33. Melica. Gl. nearly equal, with lateral ribs, nearly as 

 long as the ovate spikelet consisting of 1 or 2 flowers 

 rounded on the back and a clublike rudiment. Pales hard- 

 ening on the free nut. 



34. MoLiNTA. Gl. unequal, without tateral ribs, falling short 

 of the lanceolate spikelet of 2 or 3 semicylindrical flowers 

 and a subulate rudiment. Pales hardening on the free nut. 



35. PoA. Gl. rather unequal. Lower pale 3 — 5-veined, 

 scarious at the tip, compressed, heeled. Nut elliptic trigo- 

 nous, slightly furrowed within, free. 



36. Gltcbbia. Gl. unequal, submembranous. Lower pale 

 with 5 — 7 strong prominent ribs and a scarious margin, sub- 

 cylindrical. Nut oblong, convex on back, furrowed within, 

 free. 



37. Sclbeochloa. Gl. unequal, membranous. Lower pale 

 with 5 faint veins, cylindrical below, often keeled at the tip 



T 5 



