Argyreia mollis

Nomenclature

Accepted name/Authority/Place of publication: 

Argyreia mollis (Burm.f.) Choisy, Mém Soc. Phys. Genève 6: 421. 1834.

Synonyms: 

Convolvulus mollis Burm.f., Fl. Indica 44. pl. 17. 1768.

Convolvulus sericeus L., Mant. Pl. 1: 43. 1767.

Description

Habit: 
Lianas to 10 m; axial parts appressed whitish or yellowish pilose; young parts densely so; stems twining, woody below.
Leaves: 
. Leaves elliptic to oblong, sometimes ovate or lanceolate, 4–19 by 1.5–9.5 cm, base cuneate or rounded, apex acute or obtuse, upper side glabrous with prominent veins, underside silvery or yellowish sericeous-tomentose; lateral veins 10–12 pairs; petiole 1.5–7 cm.
Inflorescences: 
Inflorescence 3–10-flowered; peduncle shorter than subtending petiole, 0.2–4.5 cm; bracts deciduous, lanceolate-oblong, 0.3–0.5 mm, obtuse; pedicel 5–15 mm.
Flowers: 
Flower sepals subequal, densely appressed woolly-hirsute outside, hairs covering margins; outer 2 sepals oblong-elliptic, 8–10 mm, obtuse; inner 3 oblong, shorter; corolla campanulate, 3.5–5.2 cm, pale violet, darker inside tube, midpetaline bands outside appressed hirsute and villous, limb subentire, undulate; stamens much shorter than corolla, filaments pilose basally; pistil included, ovary glabrous, 4-celled.
Fruits: 
Berry red, subglobose, 8–10 mm diam., surrounded by reflexed, accrescent, calyx; sepals deeply concave, rose-red inside.
Seeds: 
Seeds 4 or fewer, black, c. 5 mm.
Author: 
Staples, G. & P. Traiperm.
References: 

Staples, G. & P. Traiperm. 2010. Argyreia in Convolvulaceae. Fl. Thailand 10(3): 337–371.

Biogeography, Ecology and Natural History

Distribution Map: 
Distribution: 

Myanmar, Thailand, Malaysia, Indonesia.

Ecology: 

Sunny places, clearings, and roadsides in deciduous and evergreen
forest, pine plantations, regrowth vegetation, on shale, phyllite, and granite
substrates; altitude: 220–1630 m.

Phenology: 

Flowering: September–December; fruiting: February, December.

Author: 
Staples, G. & P. Traiperm.
References: 

Staples, G. & P. Traiperm. 2010. Argyreia in Convolvulaceae. Fl. Thailand 10(3): 337–371.

Other information

Common names and uses: 
Ba nam pa, han phi pai luang, khruea khao long, kur khao long, cha pa dou na dé (Thai), man ruxi (Lao).
Infraspecific Characters: 

The taxonomic concept followed here for A. mollis is narrower than the broad one adopted by Van Ooststroom. Notably, Argyreia obtecta has been resurrected as a distinct species. The plants from continental Asian show more diversity than the Malesian populations and it is not clear if this can all be accommodated in a single, albeit variable species. The characters useful for recognizing A. mollis at a glance are: upper surface of leaf glabrous; blades tending to be broadest at or below the middle; veins (in dry state) prominent on upper side; underside shining silvery sericeous; sepals oblong to oblong-elliptic, the backs of all sepals entirely covered with hairs (e.g. no glabrous margins).

Chemical Data

Author: 
Eckart Eich
Chemical Data: 

Calystegines (epigeal vegetative parts, roots): A3, B1, B2, B3, C1. # Ergoline alkaloids (seeds): chanoclavine-I, chanoclavine-II, rac. chanoclavine-II, agroclavine, festuclavine, elymoclavine, isolysergol, penniclavine, ergosine. # Loline alkaloids (epigeal vegetative parts, roots): loline, N-methylloline, N-formylloline. # Flavonol sulfates (roots): quercetin 7-methyl ether-3,3'-disulfate.

References: 

Calystegines: Schimming, T, et al. 2005. # Ergoline alkaloids: Chao, J-M, der Marderosian AH. 1973. # Loline alkaloids: Tofern, B, et al. 1999. # Flavonol sulfates: Mann, P, et al. 1999. # General review (family): Eich, E. 2008. # Overview: Chemistry of Convolvulaceae.

Authorship for webpage

Editor: 
George Staples, Esmond Er
Contributors: 
Classification: 
Argyreia mollis

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