Keleria. | LXXXIX. GRAMINER. es 
radical; but in luxuriant specimens the stems attain a foot, with leaves 
almost as long, Spike cylindrical, 1 to 2 inches long or even more, the 
lower clusters more or less distant. Spikelets usually 2- or 3-flowered ; 
the glumes 1} to 2 lines long, and very pointed; the outer ones unequal, 
and scarious on the edge only; the flowering ones white and scarious, 
except the green keel, giving the spike a variegated and shining silvery- 
grey aspect. . 
In dry pastures, in central and southern Europe, extending more 
sparingly northwards into Scandinavia, in both north and south temperate 
regions. Widely distributed over Britain, and abundant in some parts, 
but rare, or wholly wanting in others. FU. summer. 
XLI. SESLERIA. SESLERIA. 
Spikelets few-flowered, in nearly sessile clusters, crowded into an ovoid 
or cylindrical spike-like panicle, as in Keleria, but there is usually a 
glume-like bract on the main axis, at the base of the lower spikelets. 
Outer glumes nearly equal and pointed, the flowering ones 3- or 5-toothed 
at the top, the central tooth lengthened into a point, or (in exotic species) 
into a short awn. 
A small genus, chiefly south European and west Asiatic, differing from 
Poa in the inflorescence, and in most species by the presence of an outer 
bract under the spikelets, which is analogous to those of Cyperacee. 
1, S. cverulea, Ard. (fig. 1253). Blue Sesleria.—A perennial, 6 
inches to nearly a foot high, with a shortly creeping rootstock, and densely 
tufted, short, and rather stiff radical leaves. Spike (or spike-like panicle) 
ovoid or oblong, 4 to % inch long, often assuming a blueish-grey hue, 
Spikelets not numerous, but closely packed, generally in pairs, one sessile, 
the other shortly stalked ; the lower ones with a broad, glume-like bract 
at their base. Glumes about 2 lines long, the flowering ones usually 2 in 
each spikelet, shortly protruding beyond the outer ones, their central tooth 
forming a short point. 
In mountain pastures, especially in limestone districts, in Europe, and 
- from the mountains of Spain and Italy to Scandinavia. In Britain, con- 
fined to Scotland, the north of England, and the north and west of Ireland. 
Fl. spring and early summer. 
XLII ARUNDO. REED. 
Very tall, erect perennial Grasses, with long, broad leaves, and a large, 
crowded panicle. Spikelets several-flowered, with long, silky hairs on the 
axis, enveloping the flowers. 
The species, though not numerous, are very conspicuous in the temperate 
and warmer climates both of the new and the old world, and form a natural 
genus if considered as including, as well our northern species, often separated 
under the name of Phragmites, as the South American Pampas Grass, 
recently introduced into our gardens, and generically distinguished under 
the name of Gynerium, on account of its flowers usually (but, it is said, 
not always) dicecious. The genus differs from Psamma and Calamagrostis 
chiefly in having more than one flower in the spikelet. 
1, A. Phragmites, (fig, 1254). Common Reed.—A stout perennial, 
