FLORA OF VIETNAM Plants of Halong Bay National Park Polypodiaceae s.l. Cheilanthes sp.?
Vietnam, Quang Ninh Prov., Ha Long city, Ha Long Bay, around Dau Go cave at elev. 50-70 m a.s.l. 20°54′650N 107°01′149E.
Secondary closed broad-leaved evergreen forest and shrubs on very steep rocky slopes and cliffs of remnant island mountains composed with solid highly eroded crystalline limestone.
Lithophytic fern on steep rocky slope. Not common.