FLORA OF LAOS Cycadaceae Cycas petrea A.Lindstr. et K.D.Hill
Vientiane Prov., Vang Vieng Distr., Nam Pe village, about 12 km to the W of Vang Vieng town, around point 18°58′41.0”N 102°18′54.1”E.
Dry broad-leaved primary and secondary evergreen and semideciduous forest on very steep rocky slopes and on vertical cliffs of remnant highly eroded rocky limestone mountains composed by solid crystalline limestone at elevation 500-1000 m.
Sterile palm-like tree 5-6 m tall, 35-40 cm DBH with leaves 2 m long on rocky slope at elevation 700 m. Sterile samples very common. Fertile specimens were not see.