FLORA OF VIETNAM
Aristolochiaceae
Asarum balansae (or A. wulimgense?)

Phu Tho Prov., Tan Son Distr., Xuan Son Municipality, Du village, around point 21°02′55”N 104°56′51”E.

Primary broad-leaved forest on very steep rocky slopes and cliffs of Svoi Lap remnant mountain composed with highly eroded solid marble-like limestone at elevation 500-600 m a.s.l.

Terrestrial creeping herb on wet shady rocky slope. Flowers dirty gray-brownish. Occasional.

HAL 12721 17 February 2009 Photo.
Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, L.T.Son.