32 
28. 
29. 
30. 
31, 
32. 
33. 
34, 
35. 
36. 
37. 
38. 
39. 
40. 
41, 
42, 
43, 
THE NATURAL HISTORY OF BRITISH GRASSES. 
Arrhenatherum—panicle lax, glumes and glumels with bifid or 
notched points. 
Sesleria—panicle spicate, glumes with trifid, glumels with bifid points. 
Cynosurus—panicle spicate, flowers hidden in a comb-like shield, 2- 
voluere of botanists. 
*#* Spikelets (ocusta), with three or more perfect flowers. 
+ Spikelets forming bilateral spikes. 
Elymus—spikelets (J.) in twos or threes, both valves of the glumes 
on one side of the spikelet. 
Hordeum—spikelets (7.) in threes, of which only the central one is 
perfect. 
Triticum—spikelets (7.) alternate on the central axis (rachis), glumes 
transverse to it. 
Brachipodium-— spikelets (1.) alternate on the central axis (rachis), 
glumes transverse to it. 
Lolium—spikelets (J.) alternate, not transverse, each with a single 
glume, 
Glyceria—panicle slightly branched, outer glumel with 5-7 strong 
ribs. 
tt Flowers paniculate, panicle more or less Jaz. 
Poa—panicle lax, glumes unequal valves, the inner glumel notched 
at the extremity. 
Briza—panicle lax, glumes equal, tumid. 
Dactylis—panicle somewhat compact, glumes pointed, glumels awn- 
less. 
Festuca—panicle lax, glumes finely pointed, glumel with a short awn. 
Bromus—panicle lax, glumes more or less rounded, outer glumel with 
a long awn, inner one edged with fine hairs. 
Avena—panicle more or less lax, glumes thin, transparent membrane, 
glumels adherent to the seed. 
Phragmites—panicle more or less compact, glumes and glumels finely 
pointed, the latter very unequal. 
Now, in the foregoing Table, we have arranged 43 genera, 
which will be found to include about 125 species. Of these 
however only about 20 genera, containing not more than 40 
species, will be found to possess any particular interest in 
an agricultural point of view ; only these therefore will be 
fully described in the next Chapter, and their properties 
and capabilities pointed out, whilst sufficient reference will 
be made to the remaining species to enable the student to 
refer them to their proper places. 
