Artistolochiaceae

Asarum maximum Hemsl.

Hanoi Capital Region, Ba Vi National Park, humid mossy primary and secondary evergreen broad-leaved forest on steep mountain slopes composed by solid shale at elevation of 1100-1300 m a.s.l. along trail to peak of 1296 m. Creeping herb on very steep shady slope. Flowers inside dark brown-violet with dull yellow center. Not rare.

11 May 2025, Cuong Huu Nguyen, Son Van Le, Ha Van Dang, Ly Van Nguyen, L. Averyanov, T. Maisak, AL4265 (NHC067).