442 
GKRAMINEiE. 
[ Gymnothrix . 
1. G. hordeiformis, Nees in Linneea , vii. 276. A glabrous peren- 
nial, 3-4 feet high, with stout erect terete firm glossy stems. Sheaths 
pilose at the throat, upper 6-9 in. long ; upper leaves a foot long, linear, 
acute, firm in texture, with crowded scabrous ribs. Spike J-l foot 
long, \ inch thick ; spikelets crowded, ascending, lanceolate, acute, 
straw-coloured, sessile, glabrous, ^ in. long. Involucre of a dozen or 
more unequal simple straw-coloured bristles, some twice as long as the 
spikelet. G. cenchroides, Roem. and Schult. ; Kunth. Enum. i. 158. G. 
caudata, Schrad. 
Mauritius, according to Kunth. Cape, Tropical Africa, Tropical Asia. 
* G Thouarsii , Beauv. Agrost. 59, t. 13, fig. 6, said to have been gathered in 
Mauritius by Du Petit Thouars, has a much laxer spike and a larger spikelet and 
involucre, the longest bristle of the latter being an inch long. If the figure be 
correct, it differs from G. japonica , Kunth, by its sessile spikelets and free styles. 
8. SETARIA, Beauv. 
Spikelets like those of Eanicum, but subtended by a unilateral 
cluster of bristles. Glumes and pale awnless. Style elongated. — 
Annual grasses, with linear leaves and abundant minute flowers in 
dense spikes or narrow panicles. Distrib. Warmer regions of both 
hemispheres. 
1. S. glauca, Beauv.; Kunth , Enum. i. 149. Annual, tufted, gla- 
brous, very various in stature, 1-5 feet high. Leaves many, narrow 
linear ; upper \ foot long, with sheaths nearly as long. Spikelets in a 
cylindrical spike 1-3 in. long, oblong, obtuse, T x ¥ in. long, pale green, 
subtended on the outside by a tuft of yellow bristles, variable in length, 
in our specimens i in. long. Panicum glaucum, Linn. P. flavescens, 
Moench. Setaria aurea, Hochst. 
Mauritius, in cultivated ground, Bouton ! Everywhere within the tropics. Millet. 
9. ZOYSIA, Willd. 
Spikelets 1-flowered, arranged in a simple spike with a flexuose joint- 
less rachis, on very short pedicels. Empty glume single, coriaceous, 
convolute, acute or shortly awned. Flowering glume membranous, 
boat-shaped. Pale the same texture, smaller, sometimes absent. 
Stamens 3. Hypogynous scales absent. Styles elongated ; stigmas 
plumose. Grain oblong, compressed, free. — Shore perennials, with a 
creeping rootstock and small spikes. Distrib. Warmer regions of 
the Old World on the seashore. Species 1 or 2. 
1. Z. pungens, Willd-; Kunth, Enum. i. 47 1 . Perennial, with a 
wide-creeping wiry rhizome, from which the erect stems arise to the 
height of a few inches above the soil. Leaves crowded, erecto-patent, 
linear-subulate, glabrous. Spikes \-l in. long, distinctly peduncled ; 
rachis slender, very flexuose, not jointed ; spikelets adpressed to 
