FLORA OF VIETNAM
Iridaceae
Iris japonica Thunb.

Cao Bang Prov., Nguyen Binh Distr., Ca Thanh Municipality, Ta Pin village, around point 22°43′56.4″N, 105°51′16.4″E.

Primary coniferous forest with Pseudotsuga sinensis along highly eroded rocky limestone ridge at elevation about 1400 m a.s.l.

Undershrub to 1 m tall in open wet rocky grassland. Occasional.

3 October 2013 CPC 5366a Photo only.
L.Averyanov, N.T.Hiep, L.M.Tuan, N.S.Khang, T.Maisak, L.Osinovets