2 S. glauca Beauv. Bottle Grass. Culm 2 - 3f; lvs. lance-linear, carinate, rough, hairy at base; sheaths striate, smooth; ligules setous; spike cylindric, yellowish-green, 2 - 4' long, nearly simple; invol. of 6 - 10 fascicled, scabrous bristles much longer than the spikelets; fertile pale, transversely rugous. -Order CLVI Gramineae Grasses Part 12 2539 Fields and roadsides, N. Eng. to Ohio. Jl., Aug.

β. purpurascens. Sheaths and spikelets pilous, awns purple.

3 S. corrugata Schul. Culm terete, 2 to 3f; lvs. linear, 8 to 12' by 3 to 4", very scabrous, as well as the sheaths; ligules setous; pan. terete, dense, spike-like, 3 to 6' long, compounded of many oppressed spikes, each of many spikelets; bristles as many as spkls. (one at the base of each) and 3 or 4 times as long; caryopsis and its pales strongly corrugated (Elliott). - Savannah (Baldwin).

4 S. viridis Beauv. Wild Timothy. Culm smooth, 2 - 3f; lvs. lanceolate, flat, minutely serrulate; sheaths striate, hairy on the margin, and with a setous stipule; spike 1 to 3' long, cylindric, compound, terminal, green; involucre of 4 - 16 fasciculate bristles, much longer than the spikelets; paleae of the perfect flower longitudinally striate, punctate, and minutely corrugated under a lens. -Order CLVI Gramineae Grasses Part 12 2540 Common in cultivated grounds, Northern States. July, Aug.

5 S. Italica Kunth. Culm somewhat compressed, about 4 to 6f high; lvs. lanceolate, 1 - 2f long, an inch wide; sheaths roughish, pilous at the throat; spike compound, interrupted at the base, nodding, 6 - 8' long sometimes 12 to 18' long and 1' thick (Feay); spikelets conglomerate; invol. of 2 or more bristles, several times longer than the flower; fertile fl. polished, shining, 1/2" long. -Order CLVI Gramineae Grasses Part 12 2541 Ditches, Mid. and S. States. July.

6 S. Germanica Beauv. Millet. Bengal Grass. Culm 2 - 4f high, simple, . leafy; lvs. lance-linear, flat, acuminate, serrulate on the margin; sheaths striate, close, pubescent; stip. bearded; spike compressed, yellowish, oblong-cylindric; rachis densely hirsute; involucrate bristles 4 - 8, as long as, or longer than the spikelets, yellowish; glumes unequal, ovate;Order CLVI Gramineae Grasses Part 12 2542 palea 1" long, obscurely 3-veined, dull with minute corrugations. - Order CLVI Gramineae Grasses Part 12 2543 In fields, often cultivated. § (S. Italica β. Kunth.)

21. CENCHRUS L. Burr Grass. (Gr.Order CLVI Gramineae Grasses Part 12 2544 the ancient name of the millet.) Flowers racemous or spicate; involucre burr-form, laciniate, echinate, persistent, and becoming hard in fruit, including 1 - 3 spikelets; glumes 2, 2-flowered, outer smaller; flowers dissimlar, the lower sterile, the upper perfect; scales 0; branching; spikelets sessile.

1 C. tribuloides L. St. 1 - 2f long, erect or procumbent and geniculate at base; lvs. lance-linear, conduplicate, gradually acuminate, 3 - 6' by 2 - 3"; sheaths open, about as long as the colored joints; spike with the burr-like involucres approximate; invol. cartilaginous, beset externally with many sharp, retrorsely hispid spines as long as itself and containing 2 - 3 spikelets; glumes acuminate-mucronate, about 3" long, producing but 1 caryopsis. -Order CLVI Gramineae Grasses Part 12 2545 Sandy alluvion, N. J. to Can. and Wis. The adhesive burrs are annoying.

22. PHAL'ARIS L. Canary Grass. (Gr.Order CLVI Gramineae Grasses Part 12 2546 white crested, as are the flowers.) Spikelets 1 (theoretically 3)-flowered; glumes 2, sub-equal, carinate; paleae 2, coriaceous, awnless, shorter than the glumes, coating the caryopsis, each with an external, accessory palea or abortive rudiment at base. Grasses with flat lvs. contracted, often spikelike panicles.

1 P. arundinacea L. Culm erect, sparingly branched or simple, 2 - 5f high; lvs. spreading, lance-linear, veined, rough-edged, on smooth, striate sheaths; pan. very dense, elliptic-oblong, somewhat secund, 3 - 6' long, glumes 3-veined, whitish, scabrous; rudiments pilous. -Order CLVI Gramineae Grasses Part 12 2547 Common in ditches and swamps, Can. to Car. and Ky. A large, showy grass, but not valuable. July, Aug. (P. Americana Torr. nec Ell.)

β. picta is the well-known striped or ribbon grass, with beautifully variegated leaves longitudinally striped in endless diversity, †

2 P. Canariensis L. Canary Grass. Culm erect, or geniculate at the lower joints, round, striate, leafy; If or more high; lvs. lance-linear; panicles spicate, ovoid, erect; 1 to 2' long; glumes whitish, with green veins; winged on the keel; rudiments smooth. -Order CLVI Gramineae Grasses Part 12 2548 Fields and pastures, not common. The glumes are curiously marked with white and green. The fruit is the chief food of Canary birds. Jl § Isle Fortunatus.

23. ANTHOXAN'THUM, L. Sweet-scented Vernal Grass. (Gr.Order CLVI Gramineae Grasses Part 12 2549 a flower, Order CLVI Gramineae Grasses Part 12 2550 yellow; from the color of its spikes.) Spikelets 3-flowered, the central one Order CLVI Gramineae Grasses Part 12 2551 , the 2 lateral ones neuter, each consisting of one bearded palea; glumes 2, unequal, the upper one larger, inclosing the flowers; palae of the Order CLVI Gramineae Grasses Part 12 2552 2, short, awnless; stamens 2. A. odoratum L. Slender, erect, 10 - 18'; lvs. short, striate, pale green; pan.

spicate, oblong-ovoid; spikelets pubescent, on short peduncles; pales of the lateral fls. linear-oblong, ciliate on the margin, one of them with a bent awn from near the base, the other with a straight awn from the back near the summit. - An early-flowering, deliciously fragrant grass, in most of the States and Can. May, Jn. § Eur.