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Ivy-leaved morning glory is a sprawling, green to reddish vine up to 6' long covered with long, white hairs. Flowers arise from leaf axils on very short (1/4") stalks; they are funnel-shaped, ~2" across, blue-violet with a white throat, with five stamens with white anthers and a single style with a three-lobed stigma. The calyx is about 1/2" long, divided into five long, narrow teeth. Individual flowers only last a few hours. The seed capsule has three compartments and is hairy. Sepals are relatively very long and narrow, unlike common morning glory, where the sepals are short and triangular. Ivy-leaved morning glory is also native to Central America and its history of introductions is probably similar to common morning glory, Ipomoea purpurea.

Ipomoea

Ipomoea hederacea

ivy-leaved morning-glory [Blooms: Aug-Sep]

Common morning glory is a vine up to 10' long with alternate, heart-shaped (never lobed), smooth-margined, almost as wide as long. The stem is green or reddish-purple, covered with long hairs; it twines around adjacent vegetation and objects. Cymes of 1-5 flowers arise from some leaf axils; they sit at the tip of about 4" long pedicels. The flowers are 2-3.5" wide, funnel-shaped, usually deep purple or pink, less commonly blue or white, a single style with a three-lobed stigma, and five stamens. Sepals are relatively short, hairy, and triangular unlike ivy-leaved morning glory (I. hederacea), where the sepals are long and narrow. Other morning glories (Ipomoea sp.) usually have lobed leaves; the superficially-similar bindweeds usually have arrowhead-shaped leaves, not heart-shaped. Common morning glory has sepals that are short and triangular, unlike ivy-leaved morning glory where the sepals are relatively very long and narrow. Common morning glory is native to Mexico; it was introduced to England by 1621, then introduced from England to North America around 1700 as an ornamental (Fang et al., 2013), where it rapidly escaped cultivation.

Ipomoea

Ipomoea purpurea

common morning-glory [Blooms: Aug-Sep]