59. 
61. 
60. 
55. 
62. 
5 4. 
63. 
64. 
65. 
VOL. XVIII. 
Mr. Woops on the Genera of European Grasses, 57 
Eragrostis. Glumes and outer palea similar, membrano-seariose through- 
out, with three prominent converging nerves. 
Glyceria. Glumes and outer palea membrano-herbaceous, with sharply 
prominent nerves and a scariose margin. Florets subcylindrical, un- 
armed. 
Sclerochloa. Glumes and outer pale membranous, with rounded ribs, 
often obscure, which disappear towards the base. Florets cylindrical 
towards the base, keeled in some species at the tip, unarmed, or with a 
minute and hardly distinguishable mucro. 
Catabrosa. Glumes and outer palea membranous at the base, both eroso- 
truncate; the latter with 3 ribs ending in as many teeth, which are united 
by the scariose margin. 
Briza. Glumes nearly equal, broad, boat-shaped, obtuse. Outer palea 
navicular, heart-shaped, ventricose, keelless, unarmed. 
Molinia. Glumes 2—3-flowered, with a subulate rudiment. Paler acute, 
both entire, membranous, firmer than the glume, and hardening on the. 
seed. 
Cynosurus. Spicule attached to a neutral spicula or spike. Fertile spi- 
cul 1 or more flowered. Glumes scariose, keeled. Outer palea concave, 
keeled, with a terminal seta. 
Dactylis. Glumes unequal, many-flowered, acute, herbaceous. Outer 
palea herbaceous, with a terminal seta, compressed and keeled. Spiculæ 
crowded. Panicle one-sided. . 
Festuca. Glumes unequal, many-flowered, thinner than the palea. Paleæ 
ribbed, rounded on the back, very acute, or with a terminal or very nearly 
terminal seta. 
Bromus. Glumes unequal, many-flowered. Palea ribbed, with a dorsal 
seta. 
