554 GRAMINEiE. 



broad ; panicle brownish-green, 8"-18", spikelets £"' long.— Hab. Trinidad !, Cr., in sa- 

 vannahs ; [Guiana, Brazil; trop. Africa]. 



132. H. striata, Gr. Leaves lanceolate-linear, or linear; panicle narrow, somewhat 

 loosened below : inferior branches much exceeding their internode3 : pedicels unequal, fili- 

 form, jointed at the dilated summit, the longer as long as the spikelet : spikelets oblong-lan- 

 ceolate, bluntish, gibbous at the dorsal side ; lowest glume short, 2 superior equal, second 11-, 

 third a-nerved, the latter with a palea: nerves costate ; fertile flower coriaceous, elliptical- 

 oblong, blunt, flat-convex, half-terete, half as long as the third glume and its palea. — Pani- 

 cum, Lam. sec. Ns. P. gibbum, Ell. !— 3'-4' high ; leaves 3"'-8"' broad ; panicle dark- 

 green, 5"— 10", spikelets 2"' long. — Hab. Jamaica !, Pd., lagoons above the ferry ; [Southern 

 linked States! to Guiana!]. 



40. SETARIA, P. B. 



Character of Panicum, but spikelets supported by scabrous, sterile branches of the pedicel 

 (the involucre), and panicle contracted. 



In the allied, bristle-bearing species of Panicum {e.g. P. sulcatum, Aubl.) the bristles arc 

 apparently homologous to the sterile branches of Setaria, but they proceed from the axis, not 

 from the pedicel itself. 



* Panicle densely cylindrical, or interrupted at the base. 



133. S. viridis, P. B. Annual; panicle cylindrical, erect, green : branches short, con- 

 tiguous ; involucral bristles in clusters, roughened upwards, exceeding the spikelet ; fertile 

 flower minutely dotted, flat-convex, thrice as long as the lower glume, equalling both the 

 superior sterile ones. — Trin. Ic. t. 203. — Panicum, L. — Hab. Jamaica!, Pd., on roadsides, 

 naturalized; [Europe and Northern Asia]. 



134. S. glauca, P. B. Panicle cylindrical, erect, usually tawny-yellow •. branches 

 short, contiguous ; involucral bristles usually in clusters, roughened upwards ; fertile flower 

 transversely wrinkled, flat-convex, twice-thrice as long as the lower, about twice as long as 

 the second, equalling the third glume. — Trin. Ic. t. 195. — Panicum, L. 



o. Annual ; bristles about twice as long as the spikelet. — S. intermedia, R. S. : our Ja- 

 maica form with a greenish panicle. 



/3. imberbis, R. S. Annual ; most bristles about as long as the spikelet, or a few twice 

 as long. — Trin. Ic. t. 196. — Panicum, Poir. 



y. penidllata. Root at length creeping : bristles yellow, or purple, 4 times (rarely twice) 

 as long as the spikelet. — Panicum, W., Jr. — When flowering with a fibrous root, it is 8. Ven- 

 tenatii, Kth. {R6v. t. 37) : afterwards it gets a rhizome, and looks like a distinct species, but 

 by forms with shorter bristles {e.g. Sieb. Mixt. 368) it passes into a. 



Hab. Jamaica!, Al, Marsh, Wils. (a, j3, 7); S. Kittsi, Els. (7), Antigua!, Wdlschl. 

 {fi, 7) ; Trinidad !, Sieb., Pd. ; [temperate and tropical zones of the globe]. 



135*. S italica, P. B. Annual ; panicle cylindrical, at length nodding at the sum- 

 mit : branches contiguous, or a little distant below, ovate, or oblong ; involucral bristles 3-1, 

 roughened upwards, usually much exceeding the spikelet : spikelets elliptical-oblong ; fertile 

 flower minutely dotted, at length almost smooth, flat-convex, twice-thrice as long as the 

 lower, little longer than the second, equalling the third glume, the latter devoid of a palea. 

 — Trin. Ic. t. 198.— Panicum, L.—2'-4,' high ; panicle about 1" diam., much stouter, and 

 leaves often broader than in the two preceding species. — Hab. Naturalized and cultivated in 

 Jamaica !, March ; [introduced from the East Indies]. 



136. S. magna, Gr. {n. sp.) " Annual," tall, broad-leaved ; panicle cylindrical, vir- 

 gate: branches short, contiguous, or the lowest slightly distant •. common axis pilose ; invo- 

 lucral bristles 3-1, roughened upwards, much exceeding the spikelet : spikelets elliptical, 

 bluntish ; fertile flower smooth, flat-convex, twice-thrice as long as the lowest glume, equal- 

 ling both the superior ones, the second 5-nerved, the third with a palea. — Habit of a long- 

 panicled S. italica, but stem 10' high, pubescent below the nodes, compressed above the base, 

 6'" broad and a spontaneous production of the West Indies. Root creepius, and fascicled, 

 but annual {Pd.) ; leaves long, 10"'-6'" broad, scabrous at the nodes : ligule and com- 

 pressed sheath ciliate; panicle 8"-l 2" long, 8"'-12'" thick (the bristles included), pale- 

 green ; spikelets 1'", bristles 6»'-4'" long, of the latter 1-3 below each spikelet and bundles 



