97. GRAMINE^. 387 



1- or more flowered. Lower pale rounded on the back w!tli 

 a terminal bristle. Each spikelet with a pectinated bract at 

 its base. Panicle spicate, 1 -sided. Nut closely coated witn 

 the pales. 



41. Dactylis. G1. unequal, herbaceous, many-flowered; 

 lower keeled. Lower pale compressed, keeled, 5-veined ; 

 dorsal vein fringed and excurrent just below the tip as a 

 short awn. Spikelets crowded, subsecund. 



42. Festuca. G1. unequal, herbaceous, many-flowered. 

 Lower pale rounded on the back, very acute, or with the 

 dorsal vein excurrent at or just below the tip as a short 

 awn ; lateral veins slightly converging and vanishing below 

 the tip. Upper pale minutely ciliated on the ribs. Styles 

 terminal. — Rachis with acute angles. Sheaths of the leaves 

 divided to the base. 



43. Bromus. G1. unequal, herbaceous, many-flowered; ZoMJer 

 l-veined, upper 3 — 5-veined. Fl. lanceolate, compressed. 

 Lower pale with a long awn, (usually) founded on 3 veins, 

 from below the tip. Styles below the top of the fruit. — 

 Sheaths of the 1. divided half-way down. 



44. Serrafalcus. 01. unequal, herbaceous, many-flowered, 

 lower 3 — 5-veined, upper 7 — 9-veined. Fl. oblong, turgid. 

 Lower pale with a short awn, (usually) founded on 3 veins, 

 from below the tip. Styles below the top of the fruit. — 

 Sheaths of the 1. scarcely divided half-way down. Spike- 

 lets narrower upwards. 



Tr. XII. HORDEIEjE. Spikelets solitary or 2 or 3 together, 

 subsessile on opposite sides of a channeled and toothed- 

 jointed rachis. Uppermost fl. often barren. Style very 

 short. (Lateral spikelets often stalked in Hordeum.) 



t Spikelets very shortly stalked or subsessile. 



45. Brachypodium. Spikelets solitary. Gl. opposite, un- 

 equal, many-flowered, their sides towards the rachis. Upper 

 pale coarsely fringed on the ribs. — The unequal gl. distin- 

 guish this from Triticum. 



tt Spikelets quite sessile. 

 ji, i- Glumes 2. 



46. Triticum. Spikelets solitary. Gl. opposite, nearly 

 equal, many-flowered, their sides towards the rachis. Inner 

 pale minutely ciliate on the ribs. 



47. Elymus. Spikelets 2 or 3 together. Gl. 2, both on the 



s2 



