Mr. Woods on the Genera of European Grasses. 57 



59. Eragrostis. Glumes and outer palea similar, membrano-scariose through- 



out, with three prominent converging nerves. 



61. Gli/ceria. Glumes and outer palea membrano-herbaceous, with sharply 

 prominent nerves and a scariose margin. Florets subcylindrical, un- 

 armed. 



60. Sclerochloa. Glumes and outer paleee membranous, with rounded ribs, 

 often obscure, which disappear towards the base. Floi-ets cylindrical 

 towards the base, keeled in some species at the tip, unarmed, or with a 

 minute and hardly distinguishable mucro. 



55. Catahrosa. Glumes and outer palea membranous at the base, both eroso- 

 truncate ; the latter with 3 ribs ending in as many teeth, which are united 

 l)y the scariose margin. 



62. Brizu. Glumes nearly equal, broad, boat-shaped, obtuse. Outer palea 

 navicular, heart shaped, ventricose, keelless, unarmed. 



54. MoUn'ia. Glumes 2 — 3-flowered, with a subulate rudiment. Paleee acute, 



both entire, membranous, firmer than the glume, and hardening on the 



seed. 

 63 Ci/nosuriis. Spiculœ attached to a neutral spicula or spike. Fertile spi- 



culse 1 or more flowered. Glumes scariose, keeled. Outer palea concave, 



keeled, with a terminal seta. 



64. DactyUs. Glumes unequal, many-flowered, acute, herbaceous. Outer 

 palea herbaceous, with a terminal seta, compressed and keeled. Spicula' 

 crowded. Panicle one-sided. 



65. Festuca. Glumes unequal, many-flowered, thinner than the palea. Paleae 



ribbed, rounded on the back, very acute, or with a terminal or very nearly 

 terminal seta. 



66. Brom/is. Glumes unequal, many-flowered. Palea ribbed, with a dorsal 



seta. ^y 



VOL. XVUI. 



