Vietnam, Nghe An Prov., Tuong Duong Distr., Tam Quang Municipality, Tung Huong village, along Khe Mat stream around point 19°03′07″N 104°36′57″E at elevation about 355 m a.s.l. Lowland closed secondary old evergreen forest on steep slopes along rocky stream valley composed with stratified solid shale and sandstone. Terrestrial and lithophytic fern along steep rocky shady stream slopes and along ridges. Leaves up to 3 m long. Very common. HLF 6610 17 March 2007. Coll. Averyanov L., P.K.Loc, N.V.Trai, N.T.Vinh, N.D.Phuong, Averyanova A. Grant from Henry Luce Foundation.
Coordinates (geographic position):19° 3′ 7″ N, 104° 36′ 57″ E ±1000 mRecord creation: 2022-01-18, Galina Savich, PhotoScan D2Citation: Specimen LE 01077989 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01077989