FLORA OF LAOS Cycadaceae Cycas petrea A.Lindstr. et K.D.Hill
Vientiane Prov., Vang Vieng Distr., Na Po village, about 12 km to the W of Vang Vieng town, Pa Nang Oua Mt., around point 18°55′36.4”N 102°20′44.6”E.
Dry broad-leaved secondary evergreen forest on very steep rocky slopes and on vertical cliffs of remnant highly eroded rocky limestone mountains composed by solid crystalline limestone at elevation 350-450 m.
Sterile palm-like tree 2.5 m tall on steep shady rocky slope. Leaves 2-2.5 m long. Occasional.