GRAMINBJ!. 545 



not awned). Fertile fiower chartaceous, awnless. — Ascending, broad-leaved grasses, radicant 

 at the base ; spike compound, often interrupted ; spikelets one-sided. 



83. O. hirtellus, R. Br. Leaves lanceolate, acuminate, undulate, pubernlous : sheath 

 pilose ; spites distant ; common axis pubescent : spikelets 3-10, pubescent ; lowest awn 

 smooth, bluntish, 3-5 times as long as its glume ; third glume shortly awned, furnished with 

 a nalea. — Panicum, L., Sw. (OpUsmeuus, R. S.). P. velutinum, ^ey.— Leaves li"-3V' long, 

 4'''-6"' broad ; lowest awn i'"-h'" long. — Hab. Jamaica !, March, in woods ; Trinidad !, 

 Sch.; [Guiana], 



84. O. loliaceus, Spreng. Leaves oblong-lanceolate or lanceolate, acuminate, glabrous 

 (or glabrescent) : sheath glabrous, ciliaie (rarely sparingly pilose) ; spikes about as long 

 as their intemodes, usually oblong ; common axis nearly glabrous, special hispid : spikeletS 

 fascicled, subdistant, glabrous or glabrescent ; lowest awn smooth, blilntish, 3-4 times as 

 long as its glume ; third glume shortly awned, furnished with a palea. — Panicum, Lam. 

 Oplismenus, P. B. 0. cubensis, Spreng. — Leaves 2"-4" long, 5"'-8"' broad ; spikes 5'"- 

 10'", lowest awn 4"'-8"' long. — Hab. Dominica!, Imr. ; Trinidad!, Or.; [Cuba! and 

 Mexico! to Brazil!]. 



•^ 85. O. setarius, Spreng. Leaves ovate-lanceolate or lanceolate, shortly acuminate, 

 glabrescent : sheath eiliate ; spikes short, very distant : common axis nearly glabrous, 

 special hispidulous : spikelets 3-7, glabrescent with eiliate glumes, approximate ; lowest 

 awn .smooth, bluntish, much longer than its glume ; third glume shortly awned, furnished 

 with a palea. — Panicum, Lam. Oplismenus, P. B. — Habit exactly of 0. undulatifolius, 

 Spreng., which has pilose sheaths and undulate leaves. Leaves 1"-Z" long, 3 '"-6"' broad ; 

 spikes 2"'-4"', lowest glume 3"'-6"' long. — Hab. Jamaica!, Al., Wils.; Antigua!, Wullschl , 

 Dominica !, Imr. ; [Cuba ! and Mexico ! to Brazil]. • . 



•>C 37. PANICUM, L. 



Sterile glumes 3, herbaceous or membranaceous, awnless, lowest clasping, mostly smaller, 

 superior usually furnished with a palea. Fertile flower at length cartilaginous, usually awn- 

 less, flat-convex or ovoid. ■' 



Sect. 1. Bbachiabia, Tr. — Fertile flower flat-convex. Spikelets ellipsoidal, pointed, 

 Z-i-s'eriate on one side of the axis, in terminal and lateral, subsessile, alternate spikes or 

 spiciform racemes. 



§ 1. Fertile flower compressed from the back, awnless (Paspaloidea, Ns!). 

 y^ 86. P. paspaloides, Fers. Perennial, glabrous; leaves linear-acuminate: ligule 

 shortly eiliate-; lateral spikes about as long as their internodes, erect ; spikelets %-seriate, 

 very shortly pedicellate, glabrous ; lowest glume subtruncate, one-third as long as, second 

 little shorter than, the fertile flower, the latter ovate, pointed, dotted. — Trin. Ic. t. 168.- — 

 P. truncatum, Tr. P. afSne, JVi.— 1'-2' high; spikes 12"'-6"' long, 10-20, inferior 

 longer; spikelets 1'" long.— Hab. Antigua!, Wullschl.; [Haiti! and Mexico to Brazil; 

 Egypt ! to trop. Africa and East Indies]. 



§ %. Fertile flower terminated by a scabrous mucro. Mmbryo larger than half the length 

 of the albumen (Echinochloa, P. B.). 



V 87. P. coloniun, Z. Annual; leaves linear-acuminate, glabrous : ligule none ; lateral 

 spikes about as long as' their internodes; spikelets 4,{-6)-seriate, very shortly pedicellate, 

 scabrous-pubescent ; sterile glumes mucrouate, lowest short, 2 superior equalling or shortly 

 exceeding the fertile flower, the latter elliptical, nearly half-terete, minutely mucronate.— 

 Trin Ic t 160 — P pseudocolonum, Bth. -. a form with bristles at the base of the spikes. 

 P. Daltoni Parlat. ! : the same. P. zonale, Guss.: a form with purple-zonate leaves. 

 P. brizoides, Sw. ? {non L). P. fluitaiis, Mey. Esseq. {non Betz). P. Petiveri Koisch 

 Nub. (non JVw.).-l'-H' high; spikes 6"'-12"' long, 4-20, inferior longer ; spikeets I'" 

 long.— Hab. Jam.aica !, all coll.; Antigua!, TF«a<;«., Dominica I, /mr.- Trinidad!^/.; 

 [common in all tropical countries, ranging to Texas!, Florida!, Spam!, southern Italy!, 

 Egypt ! and Arabia !]. 



