Ha Noi city; Cau Giay Distr., around point 21°02′52″ N, 105?48′05″ E, 4 m a.s.l.
Annual weed herb, up to 0.2 m tall; commonly but scattered in wet and open places of gardens. HAL 8881 09 Jul 2006 Photos- Loc: Collector: PK Loc & NT Vinh
Collected with the financial support from the IEBR-NYBG joined project