102 TRIANDRIA— DIGYNIA. Aha. 



A. aquatica. Linn. Sp. Pl.95. Willd. v. 1.376. Fl Br. 84. Engl. 



Bot. V. 22. /. 1557. Curt Loud. fuse, l.t.b. Knapp t. 29. Hook. 



Scot. 29. Schrad. Germ. v. 1 . 25G. Host Gram. v. 2. 30. t.4i. 



Fl. Dan. t.38\. Ehrh. Calam. 4. 

 Poa dulcis. Salisb. Pr. 20. 

 P. n. 1471. Hall. Hist. v. 2. 225. 

 Gramen paniculatum, aquaticum miliaceum. Vaill. Par. 89. t. 17. 



G. miliaceum aquaticum. Rail Syn. 402. Scheuchz. Agr. 17G. 



In ditches, pools, and the margins of rivers. 



Perennial. May, June. 



Boot creeping, or floating, vv'ith long, white, shining fibres. Stems 

 floating, branched, leafy, smooth, very long, rising about 12 or 

 18 inches above the water. Leaves linear, bluntish, flat, flaccid, 

 partly floating, bright green, smooth, except at the edges. Sheaths 

 lax, slightly compressed, smooth, with a prominent, broad, rather 

 pointed, mem.branous stipula. Panicle erect, repeatedly branch- 

 ed, smooth ; the branches unequal, aggregate, angular, many- 

 flowered. Calyx-valves not on a level, short, abrupt, notched, 

 ribbed at the lower part, purplish, smooth. Florets much longer, 

 one on a short stalk 3 their valves oblong, even, purplish, notched 

 at the end, strongly keeled, never awned. Antli. prominent, ob- 

 long, yellow. Styles and stigmas short. The flowers abound 

 with honey. When growing accidentally out of the water, this 

 grass sometimes assumes a very dwarf habit. In natural affinity 

 it comes near Poajluitans, distans, and maritima. 



** Corolla awned^i hairy at the base. 

 3. A. ccEspitosa. Turfy Hair-grass. 



Panicle spreading. Florets about the length of the calyx, 



abrupt, hairy at the base ; one of them on a hairy stalk. 



Awn short, from the bottom of the outer valve. Leaves 



flat. 

 A. csespitosa. Linn. Sp. Pl.^Q. Willd. v. 1.37 S. Fl.Br.84. Engl. 



Bot. V. 2\. t. 1453. Knapp t. 33. Hook. Scot. 29. Schrad. 



Germ.v.\.2D7. Leers 23. t. 4. f. 8. Host Gram. v. 2. 31. t. 42. 



Ehrh. Calam. 52. Fl. Dan. t. 240. 

 Avena n. 1487. Hall. Hist. v. 2. 230. 

 Gramen segetum, panicula arundinacea. Scheuchz. Agr. 244. t. 5. 



/. 2, 3. 

 G. miliaceum segetale majus. Rail Syn. 403. 

 G. segetale. Ger. Em. 5./. 



In moist shady groves, and borders of corn-fields. 

 Very abundant in Scotland. Knapp, Hooker. 

 Perennial. June, July. 

 The fibrous 100 ts make very large and dense tufts. Stems a yard 



high, with 2 joints, erect, smooth, leafy. Leaves narrow, rigid ; 



