f GRASS FAMILY.) 539 



TM?E III. FAXICE^E. SpiketetR2-flowered; the lower flower always imperfect, cither 



staminate or neutral ; in the laiter cf,e usually reduced to a single empty vulvc (placed 

 next the lower gluu.e, if that be present) ; the upper (terminal) iiower (piate.1 next tue 

 upper or inner ginine) only fertile Euibrjo and groove (when pre^ei.t) on the outer 

 side of the grain ! (next the lower valve of the fertile tto.v^r). (Fiower poijgimous, or 

 henngamous (wiien the lover fio.\er is neutral), or sometimes seemingly s-iniple and per- 

 fect, from the suppics-ion both of the lower glume and of the upper palea of the neutral 

 flower, sometimes monoecious, or rarely dioecious llarely both yluuiea are wanting.) 



Subtribe 1 PASPALE^;. Grlseb Glumes and sterile paleae herbaceous or membraneous : 

 palese of the fertile flower of firmer texture, coriaceous or chartaceous, awuless, not 

 keeled, more or less flattened parallel with the glumes. 



* Spikelets appearing as if simply l-flo'.vered from the suppression of the lower glume ; the sin* 



gle ueutral puiea of the fcta;ilo flower apparently otcup^ ing it* place. (AwuieM.) 

 66 MIL1UM. Spikelets not jointed with their pedicels, all alike in a terminal open panicle 



67. A31l J lIlt'Alli J L"M. Spikelets jointed with their pedicels, of 2 .-orts ; one in a terminal pan* 



iiie ; tue other pul-terraiieau, on radical peduncles 



68. PASP.vLUM. Spikelets j .., luted with taeir short pedicels, all alike, plano-convex, ia oua 



fcided ttpikes or r-piked racemes. 



* * Spikelets manifestly l - 2 flowered (polygamous, the lower flower Bfcuninate or often neu- 



tral), the lower giumo being pre.-ent 



69. PANICUM Spikelets not involucrate, nor the peduncles bristle-bearing. Lower glum* 



email or minute Sterile flower either stamiiiato or neutral. 



60. SETAK1A. Spikeiets ppiked-panicied, the peduncles coutiaued into naked solitary bristles: 



otherwise as in Panicuni. 



61. CEIvCIIKUS Spiksleta enclosed 1-5 together in a hard and spluy globular bur-like iuvo 



lucre. 



Subtribe 2 SACCRARE^S, Fertile paleac membranaceous or scarious, always of thinner and 

 more delicate texture than the (often indurated) glumes, frequently awned from the tip. 

 Epikeiets ui ually in pairs or threes, pauicled or spiked, some of them entirely steril* 

 (heterogamous). 



* Spikelets monoociou?, imbedded in the separable joints of the spiko. 



62. TRIPSACUM. Staminate spikelet* above, in pairs at each joint: pistillate blnglo In each 



joint : glumes indurated. 



* * Fertile spikeletfi with one perfect and one sterile (stitnlnate or mostly neutral) flower : low* 



er palea of the perfect flower awned. 



63. ERIANTHUS. Both ^pikelets at each joint of the rhachia alike fertile, Involucrate with a 



Eiiky tuft: otherwi.-e as No 64 



64. AXDKOPOGOM fcpikelete 2 at each joint o f the plumose-hairy spikes, one of them sessila 



and fertile ; the other pedicelled and sterile or rudimentary. 



65 SORGHUM Spikelets in open panicle*, 2-3 together, the lateral ones sterile or BCmctimes 

 reduced to mere pedic*.l 



1. LEl'^RSIAe Solander. FALSE RICE. WHITS GEASS. 



Spikelets 1 -flowered, perfect, flat, crowded in one-sided paniclcd spikes or 

 racemes, more or less imbricated over each other, jointed with the short pcd : cels. 

 Glumes wanting. Paleae chartaccous, much flattened laterally, boat-shaped, 

 awnless, bristly-ciliate on the keels, closed, nearly equal in length, but the lower 

 much broader, enclosing the flat grain. Stamens 1-6. Stigmas feathery, the 

 hairs branching. Perennial marsh grasses : the flat leavss, sheaths, &c., rough 

 upwards (especially in No. 1), being clothed with very minute hooked prickle*. 

 after fsm. n Ormn 



