52 Mr. Woops on the Genera of European Grasses. 
4. Andropogon. Spiculæ linear, lanceolate. Seeds nearly linear. 
In the European species of this genus, except in A. Gryllus and A. Allionii, 
the spicule are in fingered spikes. 
2. Spiculæ all fertile, in two rows, on one side of a flattened rachis. 
6. Digitaria. Spikes fingered. Spicule unarmed. 
7. Oplismenus. Spikes racemose, or panicled. Spicule naked. Glumes 
keeled, pointed, or setigerous. 
3. Spiculæ all fertile, in a compound spike tiled all round. 
8. Setaria. Spicule accompanied by setiform bracteze. 
9. Pennisetum. Inner bracteæ feathery. 
4. Spiculæ all fertile, disposed in sets, one sessile, and one or two 
stalked, enveloped in long silky hairs. 
l. Saccharum. Awnless. Squamule 2. Inner palea minute, or wanting. 
Panicle not spike-like. 
3. Erianthus. Lower palea of the fertile floret awned. Squamulæ 2. Sta- 
mens 2 or 3. Panicle spreading. 
2. Imperata. Awnless. Squamulæ 0. Panicle spike-like. 
L 
5. Spiculæ all fertile, scattered, not enveloped in hairs. 
14. Phalaris. Additional scales short, unarmed. Glumes navicular, keeled, 
inclosing. Palez coriaceous. 
15. Anthoxanthum. Additional scales large 
awned. Glumes inclosing. 
10. Panicum. Additional scale larg 
Bi, e, glume-like, embracing the horny rib- 
less paleæ, Glumes not inclosing. | 
> inclosing the scariose paleæ, 
E. Spiculæ 1 or more flowered, witho 
sessile, or nearly so, 
rachis. 
ut additional external scales, 
in two rows on one side of a flattened 
In this, and all the following divisions, 
all the spiculæ are erfect, except in 
 Lappago, where the uppermost of each - a 
Short spike are barren, or neuter and ta- 
> 
bescent, and Cynosurus, where the barren spiculæ form a sort of involucrum. 
