REVISION OF RUMEX. 91 
recognized from its large ovate leaves not at all constricted 
above the base, and its large strongly toothed valves, much 
longer than the callosity. 
** Valves very prominently toothed. 
17. R. putcHer, L.—A couple of feet high; stem 
rather slender but firm, zigzag above, branching at nearly 
every node orat length dichotomous above, mostly glabrous; 
leaves not over 5x12 cm., minutely crenulate crisped, 
fiddle shaped, cordate, obtuse to acute, the petiole and one 
or both surfaces of the principal veins mostly very papil- 
late or subvillous; flowering branches simple, divaricate, 
all but their lowest leaves very small; whorls dense but 
remote ; pedicels very stout, scarcely larger than the fruit, 
tumidly jointed in the middle; valves rigid, one commonly 
larger than the others, heavily veined, 3 to 4x5 mm., ovate, 
obtuse, with 5 to 10 stout teeth on each side, the short apex 
more or less erose; callosities frequently solitary, 1 mm. 
broad, half as long as the valve, wrinkled and often crested; 
achene 1.5x2.56 mm.—Sp. i. (1753), 336.— From the 
Mediterranean region, introduced in dry ground along the 
Atlantic Coast, especially southwardly, and on the Pacific 
slope.— Specimens examined from Virginia (Morong, 
1877; Seaman, 1877; Chickering, 1878; Vasey, 1878, 
421), Charleston, S. C. (Hexamer and Maier, 1855, 22), 
Mobile, Ala. (Mohr, 1871, 1890), Florida (Chapman), 
Pointe 4 la Hache, La. ( Langlois, 1883), Nevada ( E’'ngel- 
mann, 1880), Oregon (Howell, 1887, 712), and California 
( Torrey, 1865, 422; Palmer, 1876, 460 in part; Hilgard, 
1891; Blankinship, 1891). Ballast specimens also from 
New York (Brown) and Camden, N. J. (Parker, 1879; 
Martindale, 1879, 1880.) — Plate 29. 
18. R. optustrouius, L.—Two or three feet high, erect ; 
stem usually and sometimes strongly papillate; leaves 
somewhat undulate, ample or the lowest very large, broadly 
ovate, cordate, frequently acute, the often purple veiis 
papillate, especially beneath; flowering branches sub-erect, 
