RUMEX. 357 



1. EUMEX. Perianth 6-parted; 3 inner segments (pet.) large 

 with fr., connivent. Stain. 6, disposed in pairs. Styles 3. 

 Stigmas multih'd. Nut triquetrous, covered by the enlarged 

 inner segments of perianth ; embryo lateral. 



2. OXYRIA. Perianth 4-parted-, 2 inner segments (pet.) 

 larger. Stam. 6. Stigmas 2, multifid. Nut compressed, 

 with a membranous wing, larger than the persistent seg- 

 ments of perianth ; embryo central. 



3. POLYGONUM. Perianth 5-parted. Stam. 5 8. Styles 

 2 3. Stig. capitate. Nut trigoLOus or compressed ; em- 

 bryo lateral, incurved ; cotyledons not contorted. 



[4. FAGOPYRUM. Perianth 5-parted. Stam. 8. Styles 3. 

 Stig. capitate. Nut trigonous ; embryo central ; cotyledons 

 large, leajlike, plicate-twistedJ] 



1. RU'MEX Linn. 1 Dock. 



* Fl. perfect. Herbage not acid. L. not hastate. 



1. R. marit'imus (L.) ; enlarged pet. rhomboidal narrow 7 , each 

 with a lanceolate entire point a prominent narrow oblong tuber- 

 cle and on each side 2 setaceous teeth as long as the pet., whorls 

 crowded many-flowered leafy, 1. all linear-lanceolate narrowed 

 at both ends. E. B. 725. Nut very small : faces elliptic. 

 Marshes principally near the sea. P. or B. VII. VIII. Golden 

 Dock. E. S. L 



2. It. limosus (Thuill.) ; enlarged pet. ovate-oblong, with a lan- 

 ceolate entire point a prominent narrow oblong tubercle and on 

 each side 2 or 3 setaceous teeth shorter than the pet., whorls 

 distant many-flowered leafy, root-1. narrowly lanceolate rounded 

 or slightly decurrent below. Curt. i. 63. Sy. E. B. 1213. JR. 

 palusiris (Sm.) ed. viii. Nut 3 times as large as that of 

 JR. maritimus ; faces ovate. Upper 1. linear-lanceolate, nar- 

 rowed below. Marshy places, rare. P. VII. IX. E. S. I. ? 



3. JR. conglomerate (Murr.) ; enlarged pet. linear-oblong sub- 

 acute, each bearing a large tubercle and entire or obscurely 

 toothed at the base, whorls distant leafy, 1. oblong pointed, lower 

 1. cordate or rounded at the base. It. acutus Sin. E. B. 724. 



1 Hybrids are frequent in this genus. H. & J. G. 



