TRIANDRIA-DIGYNIA. Glyceiia. 117 



Curt Land. fasc. \.t 7. Mart. Rust. t. 1 13. Fl. Dan. t. 237 

 Host Gram.^ v. 2. 55. t. 77. Schreb. Gram. v. \.37.t.3. Leers 



OD. t. O.J. 0. 



PoaRmtans Scop. Carri.ed. 2. V. 1.73. Fl.Br.96. En^l. Bot 

 ^.-2. J.1O20. Knappt.45. Salisb. Pr.2\. Hook. Scot. 32. 

 Schrad. Germ. v. 1 . 280. 



P. n. 1 453. Hall. Hist. v. 2.219. 



^'^Ifn ^'''^o'^'^o"'^ "^""^ longissima panicula. Bauh. Hist, v 2 

 49V. J. Ran Sijn. 412. 



G. aquaticum fluitans, multiplici spica. Bauh. Theatr. 41 f 

 Scheuchz.Agr.]99.t.4.f.5. '•^' 



G. fluyiatile. Ger. Em. 14./. 



G. loliaceum fluviatile, spicfi longissima divisa. Moris, v. 3. 183. 

 sect. 8. t. 3.J^. 16. 



G. mannae esculeiitum prutenicum. Loes. Pruss. 108. t. 21, bad. 



In stagnant waters, and slow streams, frequent. 



Perennial. June—August. 



^TttilTpS ^f ^reeping or partly floating. Stems ascending, round, 



sXen ?/^^ "T""'^' ^^""""^ tender, partly decumbent on the 

 surtace of the water, as are many of the long, linear, obtuse flat 



noint d o^'"' /'"'^(" ''''^' --P--^-d, ?ery smooth. S^i^a 

 pomted, often torn, decurrent. Panicle nearly erect, lon/and 

 narrow doubly but sparingly branched, the branches roufhish 

 rather turned to one side, tor the most part erect, but while 

 flowermg strongly divaricated for a time. Spikelets erect, long- 

 linear, nearly cyhndrical, of 8-12, rather lax, florets. C«Z. mem-' 

 branous, obtuse, with a green keel, but no lateral ribs • one 

 valve much the largest. Outer valve of the cor. cylindrical ob- 

 tuse 3 membranous, and often notched, at the summit / mi- 

 nutely downy under a high magnifier, furnished with no promi- 

 nent keel, but with 7 equal, parallel, roughish ribs, besides a 

 short intermediate one, on each side of the central rib at the 

 bottom; inner valve flat, inflexed at the edges, with a mare-inal 

 rib, as in most of the true grasses, the summit cloven. Nect 

 thick and glandular, scarcely lobed. Anth. much contracted 

 after flowering. Germ, elliptical. Styles distinct. Stigmas 

 large and bushy, being, as Curtis and Brown remark, repeat- 

 edly compound. Seed elliptic-oblong, with a deep furrow at 

 one side. 



Loesel describes the mode of collecting the seeds for food, of which 

 a more ample account may be seen in the Fl. Londinen.is. They 

 are said to be very sweet, especially before they arrive at matu- 

 rity ■ whence tlie name of Manna grass, which, no doubt, sug- 

 gested to Mr. Brown the generic name. The fine sharp bran is 

 said to kill intestinal worms in horses. 



^hcjiouers, like those of Aira aquatica, have a sweet taste. The 

 nectary w really a secretory gland. 



