FLORA OF VIETNAM
Polypodiaceae s.l.
Cyrthomium sp.

Vietnam, Quang Binh Prov., Quang Ninh Distr., Truong Son municipality, around Chan Trong village at 17°10′49″N 106°29′22″E.

Secondary dry broad-leaved forest on tops and steep slopes of highly eroded karst limestone mountain composed with gray solid marble limestone allied to Long Dai River, at elevation 300-400 m a.s.l.

Lithophytic ephemeroid tuberiferous herb on vertical cliff. Inflorescence stalk to 0.6 m tall. Spathe and inflorescence white. Locally common.

HAL 11542 13 April 2008
Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, N.S.Khang