FLORA OF LAOS
Cycadaceae
Cycas macrocarpa Griff.

Vientiane Prov., Vang Vieng Distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon Mt., around point 18°56′11.5”N 102°20′05.0”E.

Dry broad-leaved primary and 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 300-900 m.

Palm-like tree with erect stem 2.5 m tall, 22-25 cm in diam. on rocky tops of mountain at elevation 800-900 m. Male specimen. Old leaves glossy dark-green, 1.2-1.5 m long, pinnes very rigid. Young cone ovoid, 12 cm long, 8.5 cm in diam., yellow-brown haired. Sterile samples very common, samples with cones rare.

LA-VN 462 15 March 2013
Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, P.V.The, S.Lorphengsy