Stems high, twining or trailing, often several feet long, smooth or sometimes slightly hairy. Leaves triangular in outline, slender petioled, hastate at the base, pointed at the apex, 2 to 5 inches long, the basal lobes divergent, usually pointed or toothed. Flowers pink with white stripes or entirely white, funnelform, 2 to 3 inches long, with a spreading, slightly five-lobed margin, solitary on slender axillary stalks; the calyx inclosed by two large, ovate, pointed bracts; stamens five, attached to the base of the corolla tube within. Fruit a globular, thin-walled capsule, about one-third of an inch in diameter, containing four black, angled seeds.
Memoir 15 N. Y. State Museum
Hedge Or Great Bindweed - Convolvulus sepium
Roadsides, fields and thickets, usually in moist soil, Newfoundland to British Columbia, south to Georgia and New Mexico. Often a troublesome weed. Flowering from June to August. The pink and white flowered form is thought by some to be the native form of this species, which is in part introduced and naturalized from Europe.
The Small Bindweed (Convolvulus arvensis Linnaeus) is smaller in every way, trailing on the ground, the leaves 1 to 2 inches long, sagittate or hastate at the base; flowers pink or nearly white, about 11/2 inches long. Native of Europe and common as a weed in fields and waste places.
The Trailing or Hedge Bindweed (Convolvulusrepens Linnaeus) resembles the Great Bindweed, but is more softly hairy or tomentose. Leaves ovate or oblong, cordate or sagittate at the base. Flowers pink or white, about 2 inches long. It is common in moist thickets and marshes along the coast.