REVISION OF RUMEX. 77 
hastate with a large decurrent rarely 1-toothed auricle on 
each side, the upper gradually reduced and entire ; panicle 
more or less compound, usually reddish, the filiform 
ascending branches leafless; pedicels capillary, once or 
twice as long as the flower, articulated at summit; flowers 
about 1.5mm. the outer sepals granular ; achene four-fifths 
as broad as long. Sp. i. (1753), 338; Meisner, DC. Prod. 
xiv. 63.—Introduced from the Old World, a weed every- 
where especially in dry poor soil. — Specimens examined 
from British America from Prince Edward’s Island and 
Nova Scotia to Vancouver Island; and from Massachusetts, 
Rhode Island, Connecticut, New York, New Jersey, Penn- 
sylvania, Maryland, West Virginia, North Carolina, South 
Carolina, Florida, Mississippi, Louisiana, Ohio, Minnesota, 
Michigan, Wisconsin, Illinois, Missouri, Iowa, Kansas, 
Colorado, Texas, and California. — Plate 13. 
§§ Acetosa.— Dioecious: inner segments of perianth (valves) rather 
finely reticulated, becoming round-cordate and much larger than the 
achene: foliage acid: inflorescence with slender leafless branches.— 
Perennial. 
2. R. wastatuius, Baldw. — Tufted, mostly a foot or 
two high, leaves exceptionally 2.5x10 cm., oblong or ob- 
lanceolate, obtuse to subacute, some of them, especially on 
_ pistillate plants, hastate with a short and often broad spread- 
ing auricle on each side; panicle mostly ample and rather 
open ; pedicels capillary, once ortwiceas long asthe fruit, ob- 
scurely articulated below the middle ; valves about 4 mm. in 
diameter, short clawed, sometimes slightly pointed, without 
callosities, the middle sometimes papillate; achene 1x1.5 
mm.— Muhl. Cat. 2 ed. (1818), 37; Elliott, Sk. Bot. S. 
C. and Ga. i. (1821), 416; Watson, Bot. King. 314. — 
R. Engelmanni, Meisner, DC. Prod. xiv. 64. — Sandy 
bluffs and fields, Long Island to Florida, in the lower 
Mississippi Valley, and in Texas.—Specimens examined 
from Aquebogue, ( Young, 1873), and Wading River, 
Long Island, ( Miller, 1873, 1878), New Jersey, (Smith, 
