GRAMINEJJ. 551 



half-terete, twice as long as the 2 basilar appendages. — Stems 3'-4' high, several from a 

 fibrous root ; leaves 4'£-3" long, H"-f " broad ; panicle 2"-6", spikelets 3'" long. — Hab. 

 Trinidad!, Cr.; [Brazil]. 



116. P. ichnodes, Gr. (n.sp.). Stout, leafy helow; leaves long, lanceolate-linear, 

 acuminate, hairy, or glabrate, sessile: midrib prominent beneath: sheath long-pilose, or 

 ciliate, subcompresscd, loose ; panicle diffuse : branches compound, fascicled, inferior 

 whorled, hairy at the base : spikelets oval, bluntish, much shorter than the filiform pedi- 

 cels ; lowest glume two-thirds to three-fourths as long as the spikelet, 3-nerved, secoud little 

 exceeded by the fertile flowers, third $ , equalling the latter, both 5-7-nerved j fertile 

 flower smooth, elliptical-lanceolate, bluntish, half-terete, 4-5 times as long as the 2 basilar 

 appendages. — Structure of Ichnanthus leiocarpus, Kth. Rev. t. 168. (Pauicum, Ns., non 

 Jr.), but leaves narrower, panicle richer (resembling P. maximum), and spikelets half as 

 large. 3'-6' high ; leaves 12"-8" long, 10"'-8"' broad : hairs long, scattered ; panicle 8"-4", 

 pedicels 6"'-2'", spikelets V"-li"' long.— -Hab. Trinidad !, Cr., heights of S. Anne. 



Sect. 4. Lasiacis. — Spikelets paniculate, defiexed from the lowest, ventricose glume, 

 usually obovate, blunt : pedicels angular. Fertile flower bearing a tuft of villous 

 down at its summit, and with a dorsal furrow above its basilar callus : its palea gib- 

 bous above. Sterile glumes leathery-chartaceous, shining, 7-13-nerved, often with a 

 terminal tuft of hairs, the lowest short. — Stem shrubby. 



This section comprises nearly allied species, and former authors have combined them al- 

 together: but their growth is very different, though in herbaria several forms appear to 

 pass into each other. 



117- P. divaricatmn, L. Scandent, high: branches divaricate; leaves lanceolate- 

 linear, acuminate, glabrous, or slightly puberulous beneath ; panicle few-branched : branches 

 simple, or slightly compound : pedicels unequal : spikelets obovate, blunt, green (growing 

 black in fruit) ; two superior sterile glumes equal; fertile flowers ellipsoidal, bluntish. — 

 Jacq. Schoznbr. t. 25. — P. bambusoides, Hamilt. P. latifolium, var. angustifolium, Tr. (PL 

 Spruce, Pan. 23). — 8' high (Jacq.), or arborescent (Ham.): stem size of a goosequill ( Wils.) ; 

 leaves 2"-4" long, 2"'-6"' broad ; panicle 2"-4" long. 



o. Leaves glabrous; spikelets 2'" long; sterile glumes roundish, two superior 11-13- 

 nerved, as long as the fertile flower. — P. Chauvinii, Steud. 



£. stenostachyum. Leaves glabrous ; spikelets 2'" long ; sterile glumes elliptical, 2 su- 

 perior 7-11-nerved, a little exceeding the fertile flower. 



y. puberulum. Leaves puberulous beneath ; spikelets l^"' long ; sterile glumes roundish, 

 2 superior 11-13-nerved, as long as the pyriform fertile flower. — P. glutinosum, Lam. 

 (III. t. 43._/*. 3. sup.) and Mey. (non Sw.). 



Hab. Jamaica!, AL, Wils., March, common in woods (o, ff) ; Antigua!, Nichols, 

 Wullschl. (a), Dominica!, Imr. (0) ; Trinidad!, Cr. (y) ; [Cuba! to Brazil!]. 



118. P. Sloanei, Gr. Trailing: branches spreading; leaves oblong-lanceolate, acu- 

 minate, often oblique, glabrous; panicle lax, diverging: branches distant, slightly com- 

 pound : pedicels unequal : spikelets obovate, blunt, green (growing purplish in fruit) ; 

 sterile glumes roundish, 2 superior unequal, 11-13-nerved, second exceeded by the fertile 

 flower, third equalling it ; fertile flower ellipsoidal, bluntish. — SI. t. 71.fi 3. — P. latifolium 

 jamaicense, L., Trin., Hamilt. P. divaricatum, Prl. (P. arborescens, Sieb. Mart. 267). — 

 l'-several feet high ; leaves 3"-5" long, 9"'-14'" broad; panicle 5"-16", spikelets 2'" long. 

 Hab. Jamaica!, Pd., Wullschl., in woods, Manchester; [Cuba! to French islands !]. 



119. P. lanatum, Sw. ! Erect, stout : branches spreading ; leaves lanceolate, or ob- 

 long-lanceolate, acuminate, oblique at the base, pubescent, or puberulous ; panicle lax, 

 spreading : branches compound, often fascicled : pedicels slender : spikelets obovate, bluntish, 

 purple: 2 superior sterile glumes equal, 9-1 3 -nerved, as long as the ovoid, bluut fertile 

 flower.— P. agglutinans, Kth.— 6'-12' high ; panicle 12"-4", spikelets 1*"' long. 



a. Leaves lanceolate, 6"-3" long, 6"'-9'" broad : sheath tubercled, pilose, or villous ; su- 

 perior sterile glumes oval, 9-11 -nerved. — 6' high (Sw.). 



0. sorghoideum, Hamilt. Leaves oblong-lanceolate, puberulous, 6"-8" long, 10"'-20"' 

 broad : sheath little pilose, or glabrous ; superior sterile glumes roundish, 1 1-13-nerved. — 

 P. megacarpon, Steud. in PI. Lechler, 2219.— 10'-12' high (Wils.). 



