268 EUPHORBIACEAE (SPURGE FAMILY) 
usually hairy. Leaves oblong-ovate, pointed, entire, sessile, those 
on the stalk few and scattered, with a whorl at the base of the 
umbel, which has usually three fork-branched rays; the bracts 
subtending the involucres are large, numerous, whorled, broadly 
margined with white, very showy ; involucres clustered in the center, 
bellshaped, softly downy, bearing five glands subtended by white, 
kidney-shaped appendages. Capsule depressed, with rounded lobes, 
usually*hairy; seeds bluntly ovoid, dark ash-gray, netted, and 
tubercled. 
Means of control 
Cut repeatedly, close to the ground, permitting no seed to be 
perfected. 
FLOWERING SPURGE 
Euphorbia corollata, L. 
Other English names: White-flowered Milkweed, Poison Milkweed. 
Native. Perennial. Propagates by seeds and by rootstocks. 
Time of bloom: June to October. 
Seed-time: July to November. 
Range: Ontario to Minnesota, southward to Kansas, Texas, 
Louisiana, and Florida. 
Habitat: Dry fields, old pastures, waste places. 
The deep, perennial rootstocks of this weed make it very dif- 
ficult to suppress. Grazing animals usually avoid it, seeming to 
know the quality of its milky sap, which is acrid and strongly 
emetic. 
Stem ten inches to two feet or more in height, bright green, erect, 
smooth or sometimes slightly hairy, often spotted, unbranched 
below the flower-cluster. Leaves narrowly oblong to lance-shape, 
obtuse at apex, smooth, rather thick, entire, one or two inches 
long, sessile or with very short petioles; those at the base of the 
umbel whorled, but those on the stem scattering. Rays of the 
umbel slender, usually five, each again twice or thrice fork-branched, 
the flowers at the base of the forks being several weeks earlier than 
the terminal ones; involucres on long peduncles, the five greenish 
yellow glands at the tip being subtended by large, white, rounded 
appendages simulating petals. Pod smooth, containing three 
