Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, environs of Mo O O O village, around point 17°39′31.7”N 105°54′48.2”E.
Closed broad-leaved primary forest on very steep rocky slope of stream valley composed with highly eroded solid crystalline limestone at elevation about 422 m a.s.l.
Terrestrial fern in shady places along rocky stream canyon. Very common.
CPC 3885 28 July 2011 Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Vinh.