4.4. Ludwigia octovalvis (Jacquin 1760: 19) Raven (1962b: 476) .

≡ Oenothera octovalvis Jacq.

Lectotype (designated by Bizzarri & Raven 1972):—illustration in Plumier (1758: t. 175) .

Distribution: —C Nepal, E Nepal, U Irrawaddy, S Hengduan.

Note: —This widespread species may have arisen in neotropics and spread worldwide, presumably assisted by human activities (Chen et al. 2007).