1. Ipomoea amnicola Morong (red-centered morning glory)

Pl. 367 i–k; Map 1596

Plants perennial, with somewhat fleshy, branched rhizomes and root systems. Stems 40–200 cm long, glabrous. Leaves long-petiolate. Leaf blades 2–7 cm long, unlobed, broadly ovate in outline, tapered to a sharply pointed tip, deeply cordate at the base, glabrous, the margins entire. Flowers in loose clusters of 3–8(–12), the stalks glabrous. Sepals similar in size and shape, the main body 3.5–5.0 mm long, broadly elliptic to nearly circular, rounded or very bluntly pointed at the tip, sometimes tapered abruptly to a short, sharp point or shallowly notched, glabrous. Corollas 2–4 cm long, funnelform to slightly bell-shaped, the tube widened gradually toward the tip, white with a reddish purple center. Stamens not exserted. Ovary usually 2-locular, the stigma 2-lobed. Fruits ovoid, the main body 7–10 mm long, the persistent style 0.5–1.0 mm long, glabrous. Seeds 4.5–5.5 mm long, the surface densely pubescent with minute, matted hairs, the angles with a crest of dense long hairs. September–October.

Introduced, known only from a single historical collection from Jackson County (native of South America; introduced uncommonly in Texas, Missouri, and northern Mexico). Disturbed areas.

This species was reported for Missouri by Shinners (1965a) and has not been rediscovered in recent years.