Nomenclature
Accepted name/Authority/Place of publication:
Ipomoea quamoclit L., Sp. Pl. 159. 1753.
Synonyms:
Convolvulus pennatus Desr. in Lam., Encycl. 3: 567. 1792.
Quamoclit pennata (Desr.) Bojer, Hort. Maurit. 224. 1837.
Description
Habit:
Annual herbaceous twiner, glabrous; stems 1–3 m.
Leaves:
Leaves ovate or oblong in outline, 2–10 by 1–6 cm, pinnately parted to the midrib, with (8–)10–18 pairs of filiform segments, the lowermost often bifid; petiole 0.8–4 cm long, base often with leafy pseudostipules (tiny leaves from axillary bud).
Inflorescences:
Inflorescences axillary, cymosely 1 to few-flowered; peduncles 1.5–10–14 cm long; pedicels (0.5–)0.9–2 cm, clavate in fruit; bracts deltoid, minute.
Flowers:
Flower sepals oblong to oblong-spathulate, 4–6 mm long, outer ones shorter, warty outside, margins paler, apex obtuse, mucronate below top, mucro 0.75–1 mm long; corolla salverform, blood red (or white), tube 2.5–3.5 cm long, straight, limb spreading, 1.75–2 cm diam., 5-pointed; stamens exserted, filaments hairy at base; pistil exserted, ovary glabrous.
Fruits:
Capsule ovoid-conical, 6–8 mm long, often apiculate with thickened style base; septa persistent, translucent, margins thicker, brownish.
Seeds:
Seeds ovoid-oblong, 5–6 mm, brownish black, marmorate.
References:
Staples, G. 2010. Convolvulaceae. Fl. Thailand 10(3): 330–468.
Biogeography, Ecology and Natural History
Distribution Map:
Distribution:
Native in tropical America and now pantropical as a cultivated plant and naturalized weed; surely more common than the few herbarium vouchers document, known to be in China, Thailand, Malaysia, Brunei, Indonesia, Australia, Pacific Islands.
Ecology:
Cultivated
ornamental and weedy in disturbed areas, waste ground, beaches; altitude: sea
level to 100 m.
Phenology:
Flowering: August–November; fruiting: August, November.
References:
Staples, G. 2010. Convolvulaceae. Fl. Thailand 10(3): 330–468.
Other information
Common names and uses:
Khem daeng, khaeng sing, phan sawan, son kang pla, khon sawan, rog pla, kang-pla (Thai).
Authorship for webpage
Editor:
George Staples, Esmond Er
Contributors:
Classification:
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