SAURURus, HEXANDRIA. TETRAGYNIA. 381 



S. cernuus L. : Will d. Spec. II. p. 292. M % c h. Fl. 

 f.p.218. Pnrsh Fl.],25S>. E U i o 1 1 Sk. I. p. 432. 

 Anonvmos aquatica Walt. Car. p. 127. Mattuschkea 

 aquaiica G m e I. Syst. Nat. I. p. 589. G r o n. Virg. 40. 

 Pluk, Aim, 343. t. 117. f. 3, 4. 



Root creeping in the mud, perennial. Stem a foot and a half or 

 2 feet in height, angular and sulcate, a little hairy towards the 

 summit, forked above. Leaves alternate, cordate, acuminate, 

 4 — 6 inches long, 2 — 3 broad, smooth on both sides, i;laucous, 

 with prominent nerves beneath; petioles 1 — 2 inches long. 

 Stiike or ament solitary, opposite a leaf on one of the forks of 

 the stem, pedunculate, 3 — 6 inches long. Calyx or scale of 

 the ament 1 -leaved, tubular, hairy, white, cleft on the upper 

 side, acute. Stamens 6 — 8, much longer than the caiyx ; Ji'.a- 

 ments unequal, filiform, enlarging a little upwards, inserted at 

 the base of the germens; anthers oh\on^^ 2-celled, opening 

 laterally the whole length. Germens 4, oblong, united on the 

 inside to the elongated receptacle; styles short, recurved; 

 stigmas small, capitate. 



i^AB. In swamps and on the borders of rivers. July — August. 



ORDER IV. 

 P O L Y G Y N I A. 



2G3. ALISMA. L. 



Calyx 3-leaved. Petals 3. Capsules numerous, 

 l-seeded, not opening. Gen. pi. 625. Nu 1 1. Gen. 



I. p. 241. Jiiss. p. 46. Lam. 111. t. CCLXXVIL 

 Nat. Ord. JuNCE^ /i/5^. Alismace^ Rich. — 



II. Bro w n. Water- Plantain. 



A. Planfago L. ; leaves ovate-cordate, acute or obluse, 

 9-nerved; flowers in a compound verticillate panicle; iVuit 

 obtusely triani^ular. W ill d. Spec. 11. p. 276. S m if h Fl. 

 Brit. I. p. 400. Eng. But. t. 837. M i c h. Fl. I. p. 218. 

 B i g. Bost. p. 87, A. trivialis P u r s h Fl. I. p. 25.2. E I- 

 liott Sk. I. p. 434. 



Moot fibrous, perennial. Leaves all radical, on long petioles, 

 ovate or oval, 4 — 6 inches long, and 2 or more in breadth, en- 

 tire, smooth, sometimes with a short a'brupt acumination, 

 rarely obtuse, distinctly cordate ut the baye, wi'.a 9 longitudi- 



