640 CXLIV. GRAMINEE. [Keleria. 
The species extends over the whole of the rite ss region from the Azores 
to Affghanistan, and may be introduced only into Australia. 
* 89. DACTYLIS, Linn. 
Spikelets several-flowered, sessile and densely crowded in thick one- 
sided clusters, vie iu a short irregular spike or at the ends of the 
short branches a dense irregular one-sided panicle. Flowering 
glumes 3. or aine the keel prominent and produced into a point or 
short awn. Grain free, concave or broadly furrowed. 
The genus is limited to a single species common in Europe, pre tity Asia and 
North Africa, and now naturalised in Australia as in some other countrie 
Y L M. Xi wie Linn.; Kunth, Enum. i, 386.—A coarse stiff 
grass of I to 2 ft., the perennial stock forming at length dense tufts. 
the branches of a short, more or less readies anicle. Each spikelet 
much flattened, 3- to 5- flowered. Flowerin g ai lanceolate, 2 to 23 
Li jong, ciliate on the ce outer glumes rather shorter, narrow, 
a prom ro ciliate keel.—Reichb. Ic. Fl. Germ. t. 59 ; F. Muell. 
Pin viii. s 
Now naturalised in various localities in N. S. Wales and Victoria, F. Mueller 
and others. 
90. CENTOTHECA, Desv. 
Spikelets several- (usually 3-) flowered, flat, all pedicellate in a loose 
apreniime panicle, the rhachis of the spi kelet slender, inarticulate, gla- 
br ed, 
acute or minutely pointed, unawn eeled, the lowest 
flo ring glume close above the 2 outer empty ones and li he 
glabrous, the upper owering ones bearing on the ginal nerves 
ew rigid bristles at first erect, at € reflexed Pal keeled 
The genus is limited to the le Australian ies, generally spread over 
tropical Asia and Africa. re Tu 
. €. lappacea, Desv.; Kunth, Enum. i. 366, Revis. Gra n. sory 
—An erect glabrous xm VM mmy Sah: < Leaves flat, 1 to 4 in. broa 
