REVISION OF RUMEX. 85 



(Jones JSxped. 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 ill the Gray herbarium. Monterey (Brewer, 

 1863,694); Oakland? (brewer, 1863, 2597); Cambria 

 (Palmer, 1876, 460 in part, some of the specimens being 

 R. pulcher in hb. Dept. Ag.), and San Bernardino 

 (Vasey, 1880). 



++ *+ Valves triangular-ovate to oblong, sometimes with a contracted 



~ 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. K. VERTICILLATUS, 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 cm., lanceolate or mostly oblong lanceolate, 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 Iowa. Specimens examined 

 from Ontario (Macoun, 1877, 1540), Vermont (Jesup, 

 1873), Massachusetts (Jesup, 1875), New York (Carey, 

 1834; Gray; Boott, 1855; Beck; Sartwell), Pennsylvania 

 (Hb. BernhardL), Delaware (0^7%, 1866), Maryland, 

 (Smith, 1879), Florida (Rugel, 1843 ; Chapman; Deane; 

 Saurman, 1868; Palmer, 1874; Heeler; Canby, 1889), 



