370 HEXANDRIA, TRIGYNIA, rumex* 



» Flowers all perfect ; valves graniferous. LapATHUM. 

 f Valves entire. 



1. R. aquaticus L. : valves ovate, entire, all of them gra^ 

 njt'erous; leaves lanceolate; the lower ones cordate at the 

 base. Willd. Spec. II. p. 255. Smith Fl. Brit. I. p. 

 394. Eng. Bot. '2\0A. P ur s h FL \. i^. 248. Muhl. 

 Cat. p. 37. Col d. Noveb. 83. 



Root large, thick, astringent. Stem 3—4 feet high, erect, sul- 

 cate. ' Leaves lanceolate, 6— 8 inches long, soraew hat glau- 

 cous ; the inferior ones larger, on long petioles, distinctly cor- 

 *daie ai the base. Flowers in a terminal leafy panicle, verti- 

 cillate ; fiedicels 3—4 lines long, capillary, nodding. Valves 

 of the fitrianth ovate, with prominent veins, each bearing a 

 small linear grain, which is sometimes obsolete. JVut large, 

 acutely triangular. 



Hab. In ditches and on the borders of ponds, June. Probably 

 introduced. Great Water Dock. 



■-2. R. crispus L.: valves very large, cordate, entire, reti- 

 culate, graniferous; leaves lanceolate, undulate, acute. 

 Willd. Spec. 11. p. 251. Smith Fl. Brit. I. p. 391. 

 Eng. Bot. 1998. Pursh Fl. 1. p. 247. B ig. Bost. p, 

 86. Elliott Sk, I. p, 414, 



Root large, fusiform, yellow. Stem 2 — 3 feet high, sulcate, 

 smooth. Leaves oblong-lanceolate, crisped on the margin, 

 rather acute. Whorls oi Jlowers crowded; the inferior ones 

 leafy. Pedicels 3 — 4 lines long. Valves large, broadly cor- 

 date, minutely serrate towards the base under a lens, each 

 grai'ifercus, one of the grains much the largest. 



Hab. In meadov/s and waste places. Juue. Introduced. 



3. R. sanguinens L.: valves oblong, small, one of them 

 graniferous; leaves lanceolate, subcordate. Willd. Spec, 

 II. p. 250. Smith Fl. Brit. 1. p. 390. Eng. Bot. t. 

 1533. Pursh FL l.p.2i7. E Ilia 1 1 Sk. \. ^. 413. 

 WalL Car. p. 126. 



Root fusiform. Stem 2 — 3 feet high, ^rauch branched, angular, 

 smooth. Leaves large, petiolate, generally variegated with 

 blood-red veins. JFAoj-/* of y^owfrs small, distant ; the upper 

 ones without leaves. Valves entire, only one of them bearing 

 a large red grain. 



Hab. In fields and on road sides. June, Introduced. 



4. R. Bntanrdca L. : valves all entire and graniferous ; 

 whorls of flowers leafless ; leaves broad-lanceolate, flat, 

 smooth ; sheaths obsolete. W Hid. Spec. II. p. 250. 



