Family, Milkweed. (See description of flower, p. 10). Color of corolla, deep purple. Leaves, opposite, broad, ovate or oblong, tapering to a sharp point, the upper ones velvety, the lower hard and smooth, 3 to 8 inches long. Flowers, in umbels, 3 or 4 umbels terminating the leafy stem, on short pedicels. June and July.
New Hampshire to Minnesota and southward. In dry ground, as fields and thickets, along roadsides. Found 2.000 feet high in the Catskills. A handsome milkweed, with dark green leaves whose veins are raised, pointed forward and prominent on the under side. (See illustration, p. 329.)
Purple Milkweed (Asclepias purpurascens)
A. amplexicaulis. - Color of corolla, greenish purple. Leaves, sessile or heart-shaped and clasping the stem, obtuse and bristle-pointed at apex, 3 to 5 inches long. Stem, smooth, pale green, 2 to 3 feet high. Umbel of many flowers regular, all pedicelled, at the tip of a long peduncle, with sometimes a second umbel, shorter peduncled, at the base. May to August.
Dry, sandy soil, fields and woods. New Hampshire to Nebraska and southward. Found 3,000 feet high in Virginia.
Color of corolla, pink or purple. (See Pink Flowers, p. 284.)