=1.= BAMBUSEÆ. Tall Grasses with woody, very siliceous stems which bear many branches in the axils of the leaves. 6 stamens. _Bambusa_ (Bamboo). =2.= ORYZEÆ. _Oryza sativa_ (Rice) is a herbaceous marsh-plant, with panicle and small, 1-flowered spikelets, with two small glumes and two large, boat-shaped, strongly siliceous pales. 6 stamens.--_Leersia._ _Lygeum. Pharus. Zizania aquatica._ =3.= MAYDEÆ. _Zea mais_ (Indian-corn, Maize); the spikelets are unisexual; the ♂-spikelets in a terminal panicle; the ♀-spikelets closely crowded and arranged in many rows in a thick, axillary spike, enclosed by large sheathing-leaves. The ♀-spikelets are 1-(2-) flowered; the ovary bears one, long, filamentous style, with bifid stigma.--_Euchlæna_; _Coix_. =4.= ANDROPOGONEÆ. _Saccharum_ (Sugar-cane); the spikelets are exceptionally small, 1-flowered, and borne in pairs in many-flowered, long-haired panicles. Tall grasses with solid, sappy stem.--_Andropogon._ =5.= FESTUCEÆ. Grasses with panicle (or spike-like panicle) and 2–several-flowered spikelets. Glumes small, in each case shorter than the spikelet.--_Festuca_ (Fescue) and _Bromus_ (Brome, Fig. 288) have the awn placed at the _apex_ of the pale, or slightly below it. _Festuca_ has perennial species, with only a sparsely-branched panicle with branches solitary or in pairs, and round spikelets; the leaf-sheath is widely open. _Bromus_ has the branches borne in half whorls, and the leaf-sheath scarcely half open. _Brachypodium_ has very short-stalked spikelets in a raceme.--_Poa_ (Meadow-grass), _Briza_ (Quaking-grass) and _Glyceria_ have awnless spikelets; these in _Poa_ are ovoid, compressed, and with sharply-keeled glumes; in _Briza_ they are broad, cordate and drooping, with boat-shaped glumes; in _Glyceria_ round, long, many-flowered, linear or lanceolate; some species of _Glyceria_ have closed leaf-sheaths.--_Dactylis_ (Cock’s-foot) differs from all others in the somewhat crowded and unilateral (subsecund) spikelets, which are compressed and oblique (_i.e._ one side more convex than the other).--_Phragmites_ (_P. communis_, Reed); the lowermost flowers of the spikelet are ♂; its axis is covered with long, silky hairs; pales without awns, but acuminate. Perennial marsh-plants.--_Melica_; panicle small, sparsely-branched with round, awnless, few-flowered, usually drooping spikelets. The upper pales, with arrested flowers, are generally united into a club-like mass.--_Molinia_, _Eragrostis_, _Koeleria_, _Catabrosa_.--_Cynosurus_ (Dog’s-tail) has a small, spicate panicle with unilateral spikelets, some of which are fertile, some barren, each supported by a pectinate scale. _Arundo. Sesleria. Gynerium. Triodia._