Jacquemontia paniculata

Nomenclature

Accepted name/Authority/Place of publication: 

Jacquemontia paniculata (Burm.f.) Hallier f., Bot. Jahrb. 16: 541. 1893.

Synonyms: 

Ipomoea paniculata Burm.f., Fl. Ind. 50. 1768.

Convolvulus parviflorus Vahl, Symb. 3: 29. 1794. nomen illegitimum  non Desr. 1789, nec Salisb. 1796.

Convolvulus multivalvis R.Br., Prod. (1810) 483 var. β.

Jacquemontia umbellata Bojer, Hort. Maurit. (1837) 229.

Convolvulus valerianoides Blanco, Fl. Filip. (1837) 90.

Breweriavalerianoides (Blanco) F.-Vill., Nov. App. (1880) 143.

Convolvulus boerhaavioides Blanco, Fl. Filip. ed. 2 (1845) 67.

Convolvulus parviflorus Vahl var. naumanni Engl., Bot. Jahrb. 7 (1886) 472.

Convolvulus paniculatus (Burm. f.) O. Kuntze, Rev. Gen. Pl. (1891) 440.

Description

Habit: 
Twining herbs; stems terete, 1–5 m, pubescent when young, glabrescent.
Leaves: 
Leaves ovate, 1.5–8 by 1.8–5 cm, villous or glabrous adaxially, base shallowly cordate or rounded, apex acuminate, mucronulate; lateral veins 5–8 per side; petiole 1–6 cm, pubescent.
Inflorescences: 
Inflorescences umbelliform-cymose, loose to dense; peduncle 3–40 mm; bracts tiny; pedicel 3–5 mm, pubescent.
Flowers: 
Flower sepals unequal, apically acuminate, pilose abaxially; outer 3 sepals ovate to elliptic-ovate, 5–7 by 4 mm, tapering toward base, inner 2 sepals smaller; corolla funnelform, 8–12 mm, white, lilac, pale bluish, centre lighter, limb shallowly 5-lobed, glabrous or lobes sparsely pubescent apically; stamens included, filaments nearly equal, pubescent basally, anthers oblong; pistil included, ovary glabrous, style 6–8 mm, stigmas oblong.
Fruits: 
Capsule globose, 3–4 mm diam., 8-valved.
Seeds: 
Seeds 1.5–2 mm, brown to purplish black, mottled by, and edges winged with, yellowish hairs.
Author: 
G. Staples
References: 

Staples, G. 2010. Convolvulaceae in Flora of Thailand 10(3): 330-469.

Ooststroom, S.J. van & R.D.Hoogland. 1953. Convolvulaceae in FloraMalesiana 4: 388–512.

Biogeography, Ecology and Natural History

Distribution Map: 
Distribution: 

Widespread across the Old World tropics: Africa, India, Sri Lanka, Myanmar, China, Thailand, Laos, Cambodia, Vietnam, Malaysia, Indonesia, Philippines, New Guinea, Australia, New Caledonia and the Pacific Islands. 

Ecology: 

Sunny sites in disturbed forest, scrub, evergreen forest, road sides, vacant lots;
altitude: sea level–600 m. 

Phenology: 

Flowering: January–May, July, October–December; fruiting: January, March, October–December

Author: 
Staples, G.
References: 

Staples, G. 2010. Convolvulaceae. Fl. Thailand 10(3): 330–468. 

Other information

Common names and uses: 
Sa-ük, chingcho, chingcho khao, chingcho noi, chingcho phi, ching cham (Thai). Aroj djotang lembut, aroj pondolandak, (Sundanese); kapiratu, rawatan, lawatan, (Javanese); siembukan, (Madurese); himag, (Panay Bisayan - Philippines).
General comments: 

The degree of pubescence is markedly variable in Malesian material; the indument of the inflorescences is often denser than that of the other parts. The sepals are slightly unequal in length; the three outer ones, of which the third one is often oblique at the base, are ovate-lanceolate to ovate, acuminate at the apex and attenuate towards the base. In some specimens from E. Java, and the Kangean Islands, the outer sepals are broader than is commonly found; such specimens closely resemble J. zollingeri.

Infraspecific Characters: 

KEY TO THE VARIETIES

1.Leaves lanceolate, 1.5-3 by o.5-0.7 cm; inflorescences typically 1-3-flowered      var. lanceolata (China)

1. Leaves ovate or ovate-oblong, 3-8 by 2-5 cm; inflorescences typically many-flowered

2. Three outer sepals elliptic to elliptic-oblong, obtusish, cuspidate to mucronulate, not distinctly acuminate at the apex                                                                                                         var. philippinensis

2. Three outer sepals ovate-lanceolateto ovate, acuminate at the apex.

3. Leaves glabrous, or short-pilose and glabrescent above and beneath                var. paniculata

3. Leaves mostly densely tomentose, finally glabrescent                                    var. tomentosa

Authorship for webpage

Editor: 
G. Staples
Contributors: 
Classification: 
Jacquemontia paniculata

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