?HRAGMiTEs. TRIANDRIA. DIGYNIA. 103 



f. 2. Nutt. Gen. I. p. 75. Hoem. ^ Schult. Gen> 

 283. Flowers panicled. Recd-grass. 



V, communis Trin.: calyx about 5-flowered ; florets 

 longer than the calyx. Arvnvo Phragmites Willd, Spec. 

 I. p. 454. Smith Fl. Brit. I. p. 144. Eng. Bot. t. 401. 

 Pursh Fl. I. p. 86. Big. Bost. p. 26. Muhl. Gram, 

 p. 88. R em. i^ Schult. II. p. 510. 



Root perennial. Culm 6 — 12 feet high, an inch or more in dia- 

 meter at the base, terete, with numerous joints. Leaues 12 — 18 

 inches long, about 2 inches broad, flat, very smooth and a 

 little glaucous, finely attenuated at the tip. Sheaths clasping, 

 smooth. Stifiule a minute fringe. Panicle very large, loose, 

 somewhat nodding. Calyx smooth ; glumes lanceolate, acu- 

 minate, the inferior much longer than the superior. Lowest 

 Jloret bearing stamens only ; the inferior valve lanceolate, not 

 one third the length of the other, ciliate on the margin ; supe- 

 rior florets surrounded with long white hairs at the base, two 

 thirds tlie length of the valves. 



Hab. Borders of ponds and swamps, especially near the salt- 

 water ; common in the Newark meadows. New- Jersey. On 

 Long-Island, near Brooklyn. Near Boston. Bi g e I o iv. In 

 Pennsylvania and Delaware. Muhlenberg. August. The 

 largest tjrass in the Northern States, appearing at a distance 

 like Indian corn. It is common to almost every part of the 

 vyorid. 



24. GLYCERIA. R, Brozon. 



Spikelets terete, elongated. Calyx many-flowered, 

 shorter than the florets. Inferior valve of the corolla 

 herbaceo-membranaceous ; superior valve somewhat 

 conduplicate. Nectaries collateral, connate. Stigmas 

 decompound. 7?. Broivji Prod. I. p. 179. Roem, 

 hP Schult. Gen. 338, Trin,Jgrost.76. Devauxia 

 F. de Beauv. 1. c. t. XIX. f. 7. Festuc^ sppo 

 L i n. Panicle simple. 



1 . G.Jluitans R. B r. : panicle secund, slis^htly branched; 

 spikelets linear-terete, appressed, 8— 12-flowered ; florets 

 very obtuse, 7-nerved ; leaves long, flat. R.Brown I.e. 

 R e m. ^ S c hu 1 1. 11. p. 695. Festuca Jluitans L. 

 Willd. Spec. I. p. 426. M i c h. Fl. 1. p. 66. B i g. Bost. 

 p. 26. Pursh Fl. \. p.Q4. M u h I. Gram. ^. ]66, PoA 

 jluitans Scopoli. Smith Fl. Brit. I. p. 95. Eng. Bot. 

 i. 1520. Elliott Sk. 1. p. 163. Devauxia /wi7an5 P. 

 dt Beau v. 



Root perennial, creeping. Culm 3 — 5 feet high, compressed or 

 ancipitous, oblique or procumbent. Leaves 8 — 12 inches long, 



