508 GRAMINACEAE. [ Andropogon. 
lanceolate, many-nerved, biplicate along prominent submarginal scabro- 
ciliate nerves which are crest-keeled in the upper half; the second 
transparent 3-nerved; the third and fourth hyaline 3- and 1- nerved, both 
ciliate at the margins, Female spikelets almost concealed by the male, 
slender cylindrical, 3—4; the outer glume dark brown, coriaceous, pu- 
bescent, indistinctly 9- nerved, narrow convolute, truncate; the second eiend 
scabrous above. No palea. — “ate Se contortus, L. — Heteropogon 
hirsutus, Pers. — H. glaber, Hook. & Arn. — The many-branched form 
with a — at the end of each branch is H. ie ystachyus of authors. 
si on all islands, the «Pili» of the natives, very troublesome on account of i 
awn whi ich get entangledin the wool of sheep. — Wide Aiatefouted over tropical pi 
Attica, Australia, the Polynesian islands and parts of Amer 
. ANDROPOGON, L. 
Spikelets 1-flowered in pairs, one sessile and hermaphrodite, the other 
pedicellate and male or neuter, in a abe spike or along the spike-like 
branches of a simple or compound panicle, the rhachis generally articulate, 
and at the terminal joint a cacti spikelet on each side of the sessile 
one. Lowest glume of sessile spikelet stiff, with two of the lateral nerves 
ost prominent; second keeled; third very thin and transparent; flowering 
glume small and transparent, with a long twisted awn; palea very small 
and thin or wanting. Pedicellate spikelet smaller, reduced to a single 
glume. Styles etc., as in Heteropogon. 
A large genus, extending through all tropical and many temperate regions of both 
hemispheres. — To it belongs the Lemon-grass, A. schoenanthus, L., of the gardens. 
1. A. annulatus, Forsk. — Kunth, Enum. Pl. I, 498. — A small grass, 
about 1 ft. high, the slender stem geniculate below, its sna bearded 
with spreading silvery hairs. Leaves ale glaucous, flat, linear, 3—4’ x 
1—11/2, roughish above and on the edges, hispidulous a he base, 
otherwise glabrous, the sheath closed. Ligule short truncate, entire or 
minutely ciliate. Spikes 3, of which 2 are placed at the end of oe ieee 
all on slender pedicels of 2“, their filiform rhachis 2‘, hairy, mo 
the nodes. Sessile spikelets 15/4, oblong-obovate, compressed, ne bens 
the lowest glume of the length of the spikelet, erences obtuse, trun- 
cate or 3-dentate, pitted at the base, 9-nerv with the inner nerves 
toa orld pale -yellowish twisted awn about 8/, plana and geniculate at 
the middle. Lodicules cuneate and broadly ea ett Stamens yellow. 
Styles discreet at the base. Pedicellate spikelet like the sessile one, but 
