578 



GRAMfNE/E 



38. Glyceria (^lanna-grass,)— Tall, s.emi-aquatic, perennial 

 with unsplit leaf-sheaths; spikelels panicled, awnless, 



grasses 



fnany-flowered ; ^hmies unequal, membranous, obtuse ; flowenng 

 glume sub-cylindric, 3— o-ribbed, obtuse. (Name from the Greek 

 glukeros, sweet, ui allusion to the sweetness of the grain.) 



{Fhtc 



.TI^M.X FLLITAN'S 



;ytiss, Ma)ina-crOif^). 



GLYCliRIA AQUAtICA 



I. G. fluilans (Flote-grass, Manna-croup), — Root-slocl; creeping; 

 stem I — 3 feet, thick, but weak, smooth, floating, or creeping; 

 leaves often floating, flat, acute, with long, compressed, striate 

 sheaths ; panicle slender, about a foot Ipng, slightly branched, 

 branches erect in fruit ; spikelels few, linear, adpressed, 5- — 2 in. 

 long, 7 — 20-nowered ; fliiweynig glume nearly thrice as long as 



