366 ENDOGENOUS PLANTS 



JJ Glumes nearly similar, though often unequal. 

 H- Lower palea convex, not keeled. 



484, GL,YCE V R1A, R. Brown. 



[Gr. GlyJceros, sweet; alluding to the sweet taste of the seeds.] 



Spikelets several- or many-flowered ; florets oblong, sessile, early 

 deciduous with the joints of the rachis, leaving the persistent mem- 

 branaceous glumes behind. Paleae nearly equal, naked, somewhat 

 chartaceous, the lower one mostly 7-nerved, usually scarious at 

 apex, upper one 2-keeled. Stamens 3, or 2. Scales 2, truncate, 

 more or less connate. Stigmas plumose, the hairs dichotomous ; 

 grain oblong. Perennial, smooth, semi-aquatic grasses : culms sim- 

 ple, often tall ; leaves flat ; sheaths nearly entire, or united round the 

 culm. 



f- Spikelets ovate ; upper palea entire, and very obtuse ; stamens 2-. 



1. Cr. CanadensiS, Trinius. Panicle oblong-pyramidal, finally 

 spreading ; spikelets 6- to 8-flowered, drooping, becoming broad ; 

 glumes purplish. 



CANADIAN GLYCERIA. 



Culm 2 to 3 or 4 feet high. Leaves 6 to 15 inches long, roughish and somewhat 

 glaucous; sheaths smooth; liguU ovate. Panicle 6 to 9 inches long, the branches 

 virgate, at length much spreading ; spikelets ahout two lines long ; glumes much 

 shorter than the florets ; grain oblong, brown. 

 Hab. Margins of swamps: not common. Fl. July. Fr. Aug. 



Obs. Collected on the northern side of the County, in 1841, by 

 Mr. JOHN M'MiNN. The G. elongata, Trin. (inserted in the 2nd 

 Edition, as Poa elongata, Torrey ) seems yet to be- an uncertain 

 plant, of the County ; and therefore is now omitted. 



t f Spikelets ovate-oblong, diffusely panicled; upper palea 2-toothed at apex; sta- 

 mens 3. 



2. r. nervata, Trin. Spikelets numerous, 3- to 5- or 7-flowered, 

 nodding on the very slender branches ; paleae oval, obtuse, nearly 

 equal, the lower one prominently nerved. 



Poa nervata. Willd. $ FL Cestr. ed. 2. p. 76. 

 NERVED GLYCERIA. 



Culm 3 to 4 feet high, slender. Leaves 6 to 15 inches long, rough on the upper 

 surface; sfieaths striate, roughish; ligule oblong-orate. Panicle with the loose 

 spreading branches by twos or threes, subdivided, angular and scabrous ; florets 

 caducous ; glumes very small ; upper palea subcoriaceous, concave above ; grain 

 ovate, acute, dark brown. 

 JIab. Swamps, and along muddy rivulets : frequent. Fl. June. Fr. July. 



tttSpikelets linear, appressed on the branches of a racemose elongated panick ; 

 ligule long ; stamens 3. 



3. G. fliiitans, R. Brown. Spikelets 7- to 13-flowcred; lower 

 palea oblong, obtuse, erosely dentate at apex, longer than the upper 

 one. 



FLOATING GLYCERIA. Manna-grass. 



