554 GRAMINEjE. 



broad; panicle brownish-green, 8"-18", spikelets f" long.— Hab. Trinidad !, O., in sa- 

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

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

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

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

 ceolate, bluntish, gibbons at the dorsal side ; lowest glume short, 3 superior equal, second 11-, 

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

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

 oxa\,Lam. sec. iVs. P. gibbum, Stl.l — 3'-4' high; leaves 3'"-8"' broad; panicle dark- 

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

 United States! to Guiana I]. 



K 



40. SETAEIA, 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 are 

 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. 



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

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

 flower minutely dotted, fiat-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. 



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

 maica form with a greenish panicle. 



p. imberhis, E. S. Annual ; most bristles about as long as the spikelet, or a few twice 

 as long. — Tiiti. Ic. t. 196. — Panicum, Pair. 



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

 as long as the spikelet. — Panicum, If., 2K— When flowering with a fibrous root, it is S. 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 o. 



Hab. Jamaica!, jd/., Marsh, Wils. (a, ft 7); S. Kitts !, Els. (7), Antigua!, Wullschl. 

 (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, fiat-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 upwai-ds, much exceeding the spikelet . spikelets elliptical, 

 bluntish ; fertile flower smooth, fiat-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 8. italica, but stem 10' high, pubescent below the nodes, compressed above the base, 

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



