REVISION OF RUMEX. 5 
(Jones Exped. 273), Idaho (Sandberg, 1887, 75), Van- 
couver Island (Macoun, 1887), and California. —Plate 22. 
Slender Californian plants with crisp sub-papillate leaves, 
simple elongated panicles, and rather large valves, one of 
them with a callosity, referred here with some doubt, occur 
as follows in the Gray herbarium.— Monterey ( Brewer, 
1863, 694); Oakland? ( Brewer, 1863, 2597); Cambria 
(Palmer, 1876, 460 in part, some of the specimens being 
R. puicher in hb. Dept. Ag.), and San Bernardino 
( Vasey, 1880). 
++ ++ Valves triangular-ovate to oblong, sometimes with a contracted 
apex. 
= Pedicels long and slender but rigid, abruptly reflexed near the base 
then straight; valves rigid, with heavy veins, all of them with 
elongated wrinkled callosities: glabrous throughout. 
11. R. verticrtiatus, L.—A couple of feet high from 
a cluster of short conical roots, erect or quickly ascending, 
or occasionally decumbent and rooting at the nodes ; rather 
slender, subsimple; leaves not wavy, the lower sometimes 
5x40 em., lanceolate or mostly oblong lunceolate, gradually 
acute at each end; petioles spongy; inflorescence nearly 
leafless, with few ascending branches; whorls dense, very 
remote below ; pedicels thrice as long as the fruit, tumidly 
jointed close to the base, gradually thickened toward the 
flower; valves 4x4 to 5 mm., deltoid to subhastately 3 
lobed, more or less cuneate at base; callosities 1 mm. 
broad and as long as the valve exclusive of its apical lobe ; 
achene 2x3.5 mm.— Sp. i. (1753), 334; Meisner, DC. 
Prod. xiv. 47.—Swamps, commonly close to the water, 
Canada to Florida, Texas and lowa.— Specimens examined 
from Ontario (Macoun, 1877, 1540), Vermont (Jesup, 
1873), Massachusetts (Jesup, 1875), New York (Carey, 
1834; Gray; Boott, 1855; Beck; Sartwell), Pennsylvania 
(Hb. Bernhardi), Delaware (Canby, 1866), Maryland, 
(Smith, 1879), Florida (Rugel, 1813; Chapman; Deane; 
Saurman, 1868; Palincr, Levi; Irecier; Canby, 1889), 
