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Published In: Flora of the British West Indian Islands 474. 1864[1862]. (prob. May 1862) (Fl. Brit. W. I.) Name publication detailView in BotanicusView in Biodiversity Heritage LibraryView in Biodiversity Heritage Library

Project Name Data (Last Modified On 8/11/2017)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Introduced


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1. Jacquemontia tamnifolia (L.) Griseb. (tie vine, smallflower morning glory)

Pl. 368 a, b; Map 1604

Plants annuals, scrambling and twining. Stems 40–200 cm long, frequently erect when young, but eventually becoming loosely ascending to prostrate, not angled, sparsely to densely pubescent with relatively long, loosely spreading hairs. Leaves short- to long-petiolate. Leaf blades 3–12 cm long, ovate-triangular to elliptic-ovate, narrowed or tapered to a usually sharply pointed tip, cordate or less commonly rounded at the base, the margins entire and hairy, the surfaces glabrous or sparsely hairy. Inflorescences axillary, short- to long-stalked, the flowers sessile or short-stalked in dense, headlike clusters. Bracts usually numerous subtending each flower cluster, forming an involucre, each 9–26 mm long, herbaceous, usually about as long as and slightly obscuring the calyx, often somewhat overlapping, narrowly lanceolate to elliptic, moderately to densely long-hairy, especially along the margins, usually persistent at fruiting. Calyx of free sepals, 7–12 mm long, similar in size and shape, narrowly lanceolate to linear-triangular, herbaceous, densely pubescent with spreading to loosely appressed hairs on the outer surface. Corollas 1.2–1.6 cm long, very shallowly 5-lobed, funnelform to nearly bell-shaped, blue. Stamens lacking subtending scales, not exserted. Ovary 2-locular, with 4 ovules, densely hairy. Style 1, 2-lobed toward the tip, the stigmas thus 2 per flower, oblong to elliptic in outline, flattened. Fruits 4–7 mm long, ovoid to nearly spherical, 2-locular, dehiscing longitudinally, the wall separating into usually 4 segments. Seeds mostly 4, 2.5–3.0 mm long, ovate in outline, somewhat longitudinally angled on the inner face, the surface tan to brown, pebbled to minutely warty, glabrous. 2n=18. July–October.

Introduced, uncommon in Butler County and the city of St. Louis (southeastern U.S. west to Texas, introduced farther north; Mexico, Central America, South America). Railroads, gardens, and open, disturbed areas.

This species was first reported for Missouri by Mühlenbach (1979). It is cultivated occasionally in the Midwest as an ornamental.



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