4.3. Ludwigia hyssopifolia (G. Don 1832: 693) Exell (1957: 471) .

≡ Jussiaea hyssopifolia G.Don.

Type:— SAO TOME AND PRINCIPE. 1822, G. Don 42 (BM000528814!) .

Distribution: —C Nepal, E Nepal, Yarlung Zangbo-Brahmaputra, S Hengduan,

Note: — Ludwigia hyssopifolia is a pantropical weed and widely distributed in the Pan-Himalaya region.