GRAMINEifi. 



45. TKICH0LJ3NA, Schrad. 



557 



Inferior stenle glume minute, or wanting, second and third membranaceous, including 

 the chartaceous flower.— Spikelets mllous-Uinj, •pedicellate, iomted at the base, 

 y .146. T. insularis, Gr. Stout ; leaves glabrous, linear-acuminate, or lanceolate-linear ; 

 branches of the pamcle whorled : 'pedieeU unequal, geminate : spikelets lanceolate, acumi- 

 nate, awnless ; lowest glume minute, glabrous, 2 superior sericeous-woolly, equal, the third 

 devoid of a palea ; flower acuminate.— ^T^. t. 14. /. 2 ; Trin. Ic. t. 220.— Andropogon L 

 Panicura leucophseum, Kth. P. Duchassaingii, Steud. Trichachne sacchariflora, Ns.\ex 

 Sieb. Mart. 30 : exclus.foliis). Saccharum polystachyon, Sieb. {non 5W.).— Panicle 6"-10" 

 spikelets 2"'-3"' long.— Hab. Jamaica !, Unds., ' Waters, March ; S. Kitts !, Sis', 

 Antigua !, Wullschl., Dominica!, Imr. ; [Texas ! and Cuba! to Patagonia!]. 



147. T. saccharoides, Gr. Stout ; leaves linear-acuminate : upper side hairy ; spici- 

 form racemes long, filiform, half-whorled in a corymbiform pamcle : pedicels slbort, single, 

 distant : axis glabrous, at length flexuose : spikelets lanceolate, acuminate, awnless ; lowest 

 glume wanting (or abortive), second woolly along the margin, with long, sericeous hairs, 

 third shorter, glabrous, devoid of a palea; flower pointed.— XM. Riv. i. 30; Trin. Ic. f. 

 107.— Panicum, Kth. Paspalum, Ns. Saccharum polystachyon, iSw.- Spikes numerous, 

 10"-6", spikelets (the wool excluded) 1'" long.— Hab. S. Kitts", Dominica !, Imr. 



SuBTKiBE 2. SACCHAREJU. — Fertile flower membrmaceotts, not indurated: sterile 

 glumes usually of firmer texture. 



46. LAPPAGO, Schreb. 



SpOcelets glomerate-racemose, hermaphrodite, flat-convex, awnless. Lowest glume want- 

 ing, second minute, membranaceous, third rigid, glochidiate-muricate, devoid of a palea. 

 ^Annual grasses. 



148. Ij. aliena, Spreng. Kaceme slender : spikelets elliptical-lanceolate, 2(-l) in each 

 glomerule, one ususflly imperfect ; bristles ^-seriate, subequal, about as long as the transverse 

 diameter of the spikelet. — Kth. lUv. t. 120. — L. racemosa, var. Kth. Tragus occidentalis, 

 Ns. ! T. Berteroanus, Schult. — Spikelets 1'" long, smaller than in L. racemosa, Schreb., 

 which has unequal, 7-seriate bristles. — Hab. Jamaica !, Pd.^ Al. ; Antigua !, Wullschl. ; 

 [Texas ! to Brazil ! ; trop. Africa to the Cape ! ; Arabia 1 to East Indies I]-. 



47. MANISURIS, Sw. 



■ Spikelets in a simple, jointed spike, awnless, alternately fertile and neutral (or " S "), the 

 fertile sunk into the excavated axis. Sterile glumes in the latter 2, rigid, exterior placed 

 against the palea of the small, inembranaceous flower ; sterile spikelets often reduced to 2 

 leathery glumes. — Annual grasses ; spikes terminal and axillary. 



'^ 149. K. ^anularis, Sw. Erect, pilose at the sheaths; exterior glume oi^i; fertile i 

 spikelet cancaoe-hemispherical, cartilaginous, densely reticulated-scrobiculate. — SI. t. 80.^ 

 Cenchrus, i. — 1'-3' high; spikes 6"'-8"' long : peduncles included within* leaf-sheaths, 

 reticulated glumes whitish, about 1^'" diam. — Hab. Jamaica!, Macf, Wils., March, on 

 dry limestone ; Trinidad !, Sch. ; [southern United States ! and all tropical countries]. 



X 48. TRIPSACUM, L. 



Spikelets monoecious, awnless, in jointed spikes, <? superior, geminate, ? inferior, single, 

 wholly imbedded into the excavations of the axis. Exterior 3 glume leathery, interior char- 

 taceous : membranaceous flowers 2. Exterior ? glume cartilaginous, interior thinner, third 

 neutral, membranaceous : flower single. Anthers opening with pores. — Tall, perennial 

 grasses ; spikes terminal, single or digitate. 



r 150. T. monostaohyiiin, W. Stout, branched ; leaves lanceolate-acuminate ; spike ' 

 solitary, cylindrical at the base .- $ spikelets distichous ; exterior $ glume l-^-nerved (J 



