27. Manisuris.

Sub. Tribe 6. =Eu-Andropogoneae.=

Spikelets are dissimilar, 1-flowered, 2-(rarely)
3-nate on the whorled articulate branches of
simple or compound racemes or panicles; glumes
four, first glume not keeled, fourth glume usually
awned.

Spikelets binate below and 3-nate at
the top on a spicate or panicled inflorescence 28. Andropogon.

Spikelets in two superposed series. Upper series of
one or more sessile bisexual or female spikelets
with one terminal pedicelled male spikelet.

Rachis jointed above the involucral spikelets 29. Anthistiria.

Rachis jointed below the involucral spikelets 30. Iseilema.

16. Coix, _L._

These are tall monoecious annual or perennial grasses. The
inflorescences are terminal or axillary spiciform racemes. The
lowest-spikelet in the raceme is female and this is enclosed in a bract
which at length becomes hardened, polished and nut-like and the other
spikelets above it are male. The male spikelets are 2- to 3-nate at each
node of the rachis, 1 sessile and 1 or 2 pedicelled, lanceolate and
4-glumed. The first and the second glumes are subequal and empty, and
the first glume is winged along the inflated margins. The third and the
fourth glumes are hyaline, with three stamens or empty. The female
spikelet is ovoid acuminate and has four glumes. The first glume is
chartaceous and the others are thin and gradually smaller. The grain is
orbicular, ventrally furrowed and enclosed by the polished hard bract.

=Coix lachryma-jobi, _L._=

This is a tall monoecious leafy annual (rarely perennial) grass with
stout, smooth, polished, freely branching stems rooting at the lower
nodes and varying in length from 3 to 5 feet or more.

The _leaf-sheath_ is long, usually smooth but occasionally with
scattered tubercle-based hairs. The _ligule_ is a narrow membrane. The
_nodes_ are glabrous.

The _leaf-blade_ is long, flat, narrow or broad, acuminate, cordate at
base, with a stout midrib and many slender veins on both sides, usually
glabrous on both sides though occasionally with scattered hairs, and
with spinulosely serrate margins, varying from 4 to 18 inches in length
and 1/3 to 2 inches in breadth.

The _inflorescence_ consists of nodding or drooping spiciform racemes, 1
to 1-1/2 inches long, terminating the branches. The racemes consist of
many male spikelets with one (rarely two) female spikelets at the base;
the rachis is