Aganonerion

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Gentianales

Familia: Apocynaceae
Subfamilia: Apocynoideae
Tribus: Apocyneae
Subtribus: Urceolinae
Genus: Aganonerion
Species: A. polymorphum
Name

Aganonerion Pierre ex Spire, Contr. Apocyn.: 43 (1905)

Typus: A. polymorphum
Pierre ex Spire

References

Pierre, J.P.L. 1894. in L. Planch. Prod. Apocyn. 206
Farr, E. R. & Zijlstra, G. eds. (1996-) Index Nominum Genericorum (Plantarum). 2010 Febr 22 [1].
Govaerts, R. et al. 2017. Aganonerion in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2017 Aug. 10. Reference page.
International Plant Names Index. 2017. Aganonerion. Published online. Accessed: Aug. 10 2017.
Middleton, D.J. 1996. A revision of Aganonerion Pierre ex Spire, Parameria Benth. & Hook. f. and Urceola Roxb. (Apocynaceae). Blumea - Biodiversity, Evolution and Biogeography of Plants 41(1): 69 -122. Full text PDF Reference page.

Vernacular names
Tiếng Việt: lá giang

Aganonerion is a plant genus in the family Apocynaceae, first described in 1905. It contains only one known species, Aganonerion polymorphum, native to Indochina (Thailand, Laos, Cambodia, Vietnam).[1][2]

Aganonerion polymorphum is used medicinally and as a food, appearing for example in a traditional Vietnamese soup called canh chua. In Vietnamese, the plant is called lá giang, literally "river leaf." In Cambodia, it is called /vɔə tʰnɜŋ/ (វល្លិថ្នឹង) or /kaɔt prɷm/ (កោតព្រំ).[3]

This plant is a perennial herb with glabrous climbing stems of 1.6–4.0 m long. Its leaves are ovate glabrous with short petioles, and are 2.5–10 cm long and 2–5 cm wide. The tips of the leaves are sharpened while the base is cordate. Its flowers are umbel, with follicles that are 8–15 cm long and 5–8 mm wide.[4]
References

Kew World Checklist of Selected Plant Families
Dy Phon, P. (2000). Dictionnaire des plantes utilisées au Cambodge: 1-915. Chez l'auteur, Phnom Penh, Cambodia.
Pauline Dy Phon, វចនានុក្រមរុក្ខជាតិប្រើប្រាស់ក្នុងប្រទេសកម្ពុជា, Dictionnaire des Plantes utilisées au Cambodge, Dictionary of Plants used in Cambodia, ភ្នំពេញ Phnom Penh, បោះពុម្ពលើកទី ១, រោងពុម្ព ហ ធីម អូឡាំពិក (រក្សាសិទ្ធិ៖ អ្នកគ្រូ ឌី ផុន) គ.ស. ២០០០, ទំព័រ ១២-១៣, 1st edition: 2000, Imprimerie Olympic Hor Thim (© Pauline Dy Phon), 1er tirage : 2000, Imprimerie Olympic Hor Thim, p. 12-13.
Tanaka, Yoshitaka; Van Ke, Nguyen (2007). Edible Wild Plants of Vietnam: The Bountiful Garden. Thailand: Orchid Press. p. 28. ISBN 978-9745240896.