IVYLEAF MORNINGGLORY, lpomoea
hederacea (L.) Jacq. 1, portion of plant; 2, seed
pod surrounded by calyx; 3, seed; 4, distribution. Annual,
reproducing by seed. Stems hairy, twining or spreading on ground.
Leaves usually 3-lobed, alternate, hairy. Plants with entire leaves
occur rarely, becoming more common toward southern part of region. Flowers
funnel shaped, purple or blue varying to white, borne singly on long stalks.
Seed pods egg-shaped, partly covered by bristly calyx, usually
with 4 to 6 seeds. Sepals lanceolate, narrowed from below the middle into
a slender, recurved tip. Seeds about 1/4 inch (6 mm) long, dark
brown to black, with 1 round and 2 flattened sides. Found in gardens,
fields, and waste places. A troublesome weed in cultivated fields, especially
corn and soybeans, where it ties plants together before harvest.
TALL MORNINGGLORY, Ipomoea purpurea
(L.) Roth. 5, leaf; 6, distribution. Very similar to the
above species. Leaves are larger, heart-shaped, very rarely lobed.
Flowers blue, purple, white, or variegated. Sepals lanceolate to
oblong, acute to acuminate.