FLORA OF VIETNAM Scrophulariaceae s.l. Orobanchaceae Christisonia hookeri C.B. Clarke ex Hook. Vietnam, Thua Thien – Hue Prov., A Luoi Distr., Hong Kim Municipality, Dut village, about 3 km to NE from point 16°17′54′'N, 107°12′41′'E near A Nor waterfall at elevation about 700-800 m a.s.l.
Wet closed secondary broad-leaved forest on very steep slopes of A Nor stream composed with shale and granite.
Achlorophyllous ground parasite on steep slopes along hill ridge. Flowers white, central tepal with yellow central spot. Rare.