3. 
m 
10. 
FE: 
Mr. Woops on the Genera of European Grasses. 41 
inclosing the spicula, scariose at the margin. Outer palea of the form 
and construction of the glumes. Florets distant. 
Melica. Glumes nearly equal, membranous, with a scariose margin, as 
long as the ovate compressed spicula. Florets 1 or 2, with the additional 
stalked, club-like rudiment of one or two more. Paleæ many-ribbed, 
hardening on the loose seed. 
Molinia. Glumes much shorter than the lanceolate spiculæ. Florets 2 
or 3, with the subulate rudiment of 1 more. Paleæ hardening on the 
loose seed. 
. Catabrosa. Glumes rounded, or truncate and erose, shorter than the 
spicula. Florets 1 or 2, the upper on a long stalk, without any additional 
rudiment. Outer palea membranous, with 3 ribs ending in as many teeth, 
which are united by the scariose margin. 
Sesleria. Spicule sessile, tiled all round. Glumes membrano-scariose, 
very acute, nearly or quite as long as the spicula. Outer palea keeled, 
membranous, with a scariose margin ending in 3 or 5 points. Spike 
compact, with bracteæ or abortive glumes at the base. Styles long, 
united below. Stigmas very long. Squamulæ laciniate. 
. Oreochloa. Spiculæ compressed in two rows, forming a l-sided spike or 
head. Outer palea concave, entire, mucronulate. Styles long, united. 
Poa. Glumes nearly equal, shorter than the spicula. Outer palea mem- 
branous below, scariose at the tip, the parts usually separated by a 
purple stain, nerved, subacute, compressed, keeled, unarmed. Panicle 
scattered, equal. 
Eragrostis. Glumes and outer palea similar, membrano-scariose, equal 
throughout, with 3 prominent converging nerves. Spicule oblong or 
linear, 6—20-flowered, unarmed. Panicle scattered, equal. 
Glyceria. Glumes unequal, acute, membrano-scariose. Florets nume- 
- TOUS, cylindrical. Outer palea obtuse, or somewhat truncate, with 5 or 7 
prominent nerves ending in long teeth, which are united by the scariose 
margin, unarmed. i 
Sclerochloa. Glumes unequal, acute, membranous. Outer palea cylin- 
drical at the base, with rounded, obscurely marked ribs upwards, often 
keeled towards the top, truncate or obtuse, unarmed. 
VOL. XVIII. x 
