Flora of Tamil Nadu

Convolvulaceae Shrubs, 1-3 m; axial parts puberulent, later glabrescent; sap milky. Branches terete or angular, stout, becoming sparsely lenticellate with age. Petiole 2.5-15 cm; leaf blade ovate or ovate-oblong, 6-25 X 4-17 cm, densely puberulent or adaxially subglabrous, base cordate or truncate, margin entire, apex acuminate, mucronulate; midvein 2-glandular abaxially at base, lateral veins 7-9 pairs. Inflorescences few to several flowered; peduncle stout, 5-10 cm; bracts early deciduous, ovate. Pedicel 1-1.5 cm. Sepals ovate or nearly circular, broadly rounded, abaxially puberulent, equal or inner ones longer, 5-6 mm. Corolla lilac or pink, darker inside, funnelform, 7-9 cm; tube and midpetaline bands mealy outside. Stamens included; filaments unequal; anthers linear, base sagittate. Pistil included; ovary puberulent. Style base puberulent; stigma 2-lobed. Capsule pale brown, ovoid, 1.5-2 cm, 4-valved, apiculate. Seeds black, ca. 1 cm, brown sericeous-pubescent. 2 n = 30...

Convolvulaceae Description Herbs annual, twining or prostrate, with ± retrorsely or spreading hispid axial parts. Stems 1-2 m. Petiole 1.5-6.5 cm; leaf blade lanceolate-ovate or oblong-ovate, 3-9 X 1.5-3.5 cm, base cordate, margin entire, apex long attenuate, sometimes acute, appressed hispid; lateral veins 6 or 7 pairs. Cymes axillary, sessile or nearly so, usually 1-3-flowered; bracts linear-lanceolate, 3-8 mm, abaxially pilose. Pedicel very short or absent. Sepals ovate, ± equal, 7-9 mm, abaxially densely hirsute, apex linear-acuminate; inner sepals slightly narrower. Corolla pink or purplish, rarely white, campanulate, 7-9 mm, midpetaline bands densely hirsute outside; limb triangular-lobed. Stamens included. Ovary hirsute, 2-loculed, 4-ovuled. Stigma capitate, 2-lobed. Capsule ± globose, 5-6 mm in diam., spreading hirsute, apiculate. Seeds gray-brown, 2.5-4 mm, glabrous, minutely reticulate. 2 n  = 30.

Ipomoea marginata (Desr.) Verdc. Convolvulaceae Description: Herbs perennial, with a stout root and spreading hirsute or glabrous axial parts. Stems twining or prostrate, 1-3 m. Petiole 1-3 cm, sometimes minutely tuberculate; leaf blade often purple or purple spotted, elliptic-ovate or reniform to circular, apical leaves sometimes sagittate or hastate, 2-6 X 2-5 cm, glabrous, ciliolate marginally, base deeply cordate or hastate, margin entire or minutely undulate, apex attenuate or ± abruptly acuminate. Inflorescences few to several flowered; peduncle 2-8 cm, thick, often applanate, verruculose distally; bracts persistent, ovate or oblong, ca. 2 mm. Pedicel 5-6 mm, sparsely verruculose. Sepals ovate or elliptic-oblong, equal or inner 3 longer, 4-7 mm, glabrous, apex obtuse; outer 2 verruculose, margin thinner. Corolla white or purple, with a darker center, ± salverform, 2.5-4 cm; lobes 5, apiculate. Stamens included. Pistil included; ovary glabrous. Stigma 2-lobed. ...

Ipomoea pes-caprae (L.) R. Br. Convolvulaceae Description: Herbs perennial, glabrous, with a thick tap root. Stems 5-30 m, prostrate, sometimes twining, rooting at nodes. Petiole 2-10 cm; leaf blade ovate, elliptic, circular, reniform or ± quadrate to oblong, 3.5-9 X 3-10 cm, rather thick, 2-glandular abaxially, base broadly cuneate, truncate, or shallowly cordate, margin entire, apex emarginate or deeply 2-lobed, mucronulate. Inflorescences 1- to several flowered; peduncle stout, 4-14 cm; bracts early deciduous, broadly deltate, 3-3.5 mm. Pedicel 2-2.5 cm. Sepals unequal, ± leathery, glabrous, apex obtuse, mucronulate; outer 2 ovate to elliptic, 5-8 mm, wider; inner 3 nearly circular and concave, 7-11 mm. Corolla purple or reddish purple, with a darker center, funnelform, 4-5 cm. Stamens included. Pistil included; ovary glabrous. Stigma 2-lobed. Capsule ± globular, 1.1-1.7 cm, glabrous, leathery. Seeds black, trigonous-globose, 7-8 mm, densely brownish tomentose....

Ipomoea pes-tigridis L. Convolvulaceae Description: Herbs annual, twining, with spreading hispid axial parts. Stems 0.5-3 m. Petiole 2-8 cm; leaf blade circular or transversely elliptic in outline, 2-10 X 3-13 cm, palmately deeply divided; segments (3-)5-9, elliptic or oblong, tapered at both ends, densely pubescent, apex mucronate. Inflorescences capitate, few flowered; peduncle 4-11 cm; bracts hirsute; outer involucral bracts oblong to linear-oblong, 2-2.5 cm; inner bracts smaller. Pedicel obsolete. Sepals lanceolate, slightly unequal, 1-1.4 cm, hirsute on both sides. Corolla white, funnelform, 3-4 cm, midpetaline bands sparsely pubescent. Stamens included; filaments glabrous. Pistil included; ovary 2-loculed, glabrous. Stigma 2-lobed. Capsule ovoid, ca. 7 mm, 4-valved. Seeds ellipsoid, ca. 4 mm, gray tomentellous. 2 n  = 28, 30.

Ipomoea obscura (L.) Ker Gawl. Convolvulaceae Description Herbs twining; axial parts glabrous, spreading pubescent, or almost woolly. Stems thinly angular, 1-2 m. Petiole 1.5-3.5 cm; leaf blade cordate-circular or ovate, occasionally reniform, 2-8 X 1.6-8 cm, glabrous or sparsely pilose, base cordate, margin entire or minutely undulate, apex attenuate, acute. Inflorescences 1-3-flowered; peduncle almost filiform, 1.4-4 cm; bracts subulate, ca. 1.5 mm. Pedicel 0.8-2 cm, subglabrous, thickened and recurved in fruit distally. Sepals reflexed in fruit, elliptic-ovate, subequal, 4-5 mm, glabrous or ± pubescent, mucronulate, outer ones whitish margined. Corolla white or pale yellow, with darker midpetaline bands and a purple center, funnelform, 2-2.5 cm. Stamens included; filaments very unequal. Pistil included; ovary glabrous. Stigma 2-lobed. Capsule conical-ovoid or ± globose, 6-8 mm in diam., apiculate. Seeds black-brown, 4-5 mm, densely gray-brown tomentellous. 2 n ...