550 POLYGONACEAE. 
8. Rumex Patiéntia L. Patience Dock. 
(Fig. 1306.) ; 
Rumex Patientia ¥,. Sp. Pl. 333. 1753. 
Perennial, glabrous, stem erect, simple or spar- 
ingly branched, grooved, 2°-5° tall. Lower leaves 
ovate-lanceolate, long-petioled, 4/-16’ long, the 
upper oblong-lanceolate or oblong-elliptic, acute or 
obtusish, the uppermost lanceolate; fruiting panicle 
dense; racemes erect, somewhat interrupted in 
fruit; flowers densely whorled; calyx green; pedi- 
cels slender, 2-4 times as long as the calyx-wings,. 
jointed below the middle; wings orbicular-cordate, 
2//-3// long, one of them bearing a prominent ovoid 
callosity; achene 134’ long, light brown, smooth, 
shining, its faces concave, its angles obscurely 
oS 
GAIN) \y 
ANS 
\ () 
“ Mi margined. 
Pp 2 In waste places, Vermont and Ontario to Wiscon- 
Cy sin, Pennsylvaniaand Kansas. Alsoin the Far West. 
Naturalized from Europe. May-June. 
g- Rumex Britannica L. Great Water-Dock. (Fig. 1307.) 
Rumex Britannica \,. Sp. Pl. 334. 1753 ; =. 
Rumex Hydrolapathum var.? Americanum A. 
Gray, Man. Ed. 2, 377. 1856. 
R. orbiculatus A. Gray, Man. Ed. 5, 420. 1867. 
Perennial, glabrous, dark green, stem stout, 
erect, more or less branched, grooved, 3°-6° tall. 
Leaves lanceolate or oblong-lanceolate, the 
lower 1°-2° long, long-petioled, the upper 2’-6/ 
long, short-petioled; fruiting panicle dense; ra- 
cemes nearly erect, more or less interrupted; 
flowers densely whorled; calyx light green; 
pedicels slender, conspicuously jointed above 
the base, 14-2 times as long the calyx-wings; 
wings broadly cordate, 3’” long, irregularly den- 
ticulate, each bearing a large callosity; achene 
ovoid-oblong, or oblong, 2’” long, pointed at 
both ends, brown, smooth, shining, its faces 
concaye, its angles slightly margined. 
In swamps and wet soil, New Brunswick and 
Ontario to Minnesota, New Jersey, Pennsylvania, 
Illinois and Iowa. July—Aug. 
1o. Rumex occidentalis S. Wats. Western Dock. (Fig. 1308.) 
R. occidentalis S. Wats. Proc. Am. Acad. 12: 253. 1876.. 
Perennial, glabrous, stem stout, strict, erect or 
nearly so, strongly grooved, simple or sparingly 
branched, 2°-3° high. Leaves lanceolate or ovate- 
lanceolate, bluish-green, somewhat crisped and 
wavy-margined, papillose, the lower 8’-12’ long,. 
obtuse or subacute at the apex, more or less cordate: 
at the base, long-petioled, the upper smaller and 
usually lanceolate; panicle rather dense, leafless: or : 
nearly so, erect; racemes usually not interrupted; 
flowers loosely whorled; calyx pale green, 1’’ long; 
pedicels obscurely jointed below the middle, 2-3 
times longer than the calyx-wings; wings triangu- 
lar-ovate, 215’/-4’” long, somewhat dentate or un- 
dulate, bearing no tubercles; achene oblong, 2//— 
2!4’ long, short-pointed, chestnut-brown, smooth, 
shining. 
In wet places, Labrador to Alaska, Ontario, Rocky 
Mountains to Texas, and to California, May-Aug. 
