RDMEx POLYGONACEiE 587 



R. CRispus L. Sp. 335. Glabrous to slightly papillate : stems stout, 2-3 

 feet high, simple : leaves bluish green, the lowest ample, elliptical to mostly 

 oblong- lanceolate, rounded or decurrently acutjsh at base, often a foot 

 long: Dranches of the panicle rather strict, somewhat leafy: pedinels about 

 one-half longer than the fruit, tumidly jointed near the base: inner sep- 

 als 2-8 lines long, rounded ovate, barely cordate, rounded at the apex or 

 with a broad blunt acuminatiou, minutely erose to broadly dentate below, 

 each with a smooth ovoid often rosy callosity reaching lo the middle of 

 the valve: achene 1-2 lines long. Common throughout temperate North 

 America and Europe. 



+► ■><■ Inner sepals triangulai'-ovate to oblong, sometimes with a 

 contracted apex. 



R. liesperins Greene Pitt, iv, 234. "Allied to K. altismnus hut low 

 and slender, very leafy, the panicle small, small-fruited: leaves elliptic- 

 lanceolate, very acute or acuminate, wavy-margined or even almost crisp- 

 ed : pedicels jointed at the very base : valves of the fruiting calyx from 

 quite exactly and sharply deltoid to subreniform-deltoid__3S broad at base 

 as long, none arain-bearing, all distinctly though not strongly venulose, 

 seldom obviously reticulate. 



Bottom lands near Bingen Washington, 31 Oct. 1893, W. N. Suksdorf; 

 the specimens distributed for R. altissimus, but the species very distinct." 



R. salicifolins Wein. Fl. iv, 28. Glabrous, pale green : stems spread- 

 ing to erect, 1-3 feet high simpleor branched, flexuous : from thick perenni- 

 al roots, leaves lanceolate to linear, or the lower oblong, acute or acuminate 

 at both elids, or rarely obtuse at the apex, often falcate, 2-7 inches long: 

 panicles simple: pedicels arcuately curved, scarcely as long as the fruit, or 

 a few in each cluster longer, jointed near the base : inner sepals triangular - 

 ovate, acute, 2-3 lines long, delicately veined : callosities variable in num - 

 her smooth or pitted, often nearly as long as the valve • achenes 1-2 lines 

 long. In rich moist soil, Alaska to California and the Atlantic States and 

 Canada : also Europe. 



R. coxarx>MERATD8 Murray Prodr. Fl. Goett. 52. Glabrous perennial : 

 stems slender, mostly clustered, 1-3 feet high: leaves ovate to oblong or 

 lanceolate, 1-5 inches long, some of them somewhat fiddle-shaped, crenu- 

 late and slightly crisped: flowering branches slender, at length elongated, 

 not zigzag, bearing a broadly lanceolate leaf at nearly every node : pedicels 

 slender, about as long as the fruit, tumidly jointed near the base: inner 

 sepals about 3 lines long, nearly oblong, obtuse: callosities mostly 3, round 

 to ovoid, very prominent, smooth, half as broad and nearly as long as the 

 valves: achenes about a line long. In waste places, western Washington 

 to California.: also in the Atlantic States: adventive from Europe. 



* * Valves very prominently toothed. 



R. PULCHEK L. Sp. 336. Stems slender, zigzag above, branching at 

 nearly every node, at length dichotomous. above, mostly glabrous: leaves 

 oblong or some of the lower ones fiddle shaped, 1-6 inches long, obtuse, 

 cordate at base, upper ones oblong or oblorig-lanceolate, usually narrowed 

 at both ends: panicle loose : racemes long, divergent, ra' her leafy: pedicels 

 very short, scarcely longer than the fruit> tumidly jointed near the mid-, 

 die: inner sepals rigid, one commonly longer than the others, prominently 

 veined, nearly 3 lines long, ovate, obtuse, with 5-10 short teeth on each' 

 side, one or all of them with a wrinkled callosity half as long as the valve : 

 achenes about a line long. In waste places^ naturalized from Europe. 



R. 08TUSIFOMU6 L. 1. ,c. Glabrous perennial •. stems stout, erect, sim-; 

 pie or sparingly branched, 2-4 feet high : leaves amplei broadly ovate, 4-1 Ij 

 inches long cordate, the veins often red or purplish, the upper ones lanceo-j 

 late or oblong-lanceolate, the margins somewhat undulate or crisped:?. 



