FLORA OF LAOS Hin Nam No Nature Protected Area Arecaceae Arenga westerhoutii Griff. Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31'02.7"N, 105°47'17.2"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l. Palm (male plant) with stem to 2 m tall and leaves 4-5(6) m long on very steep rocky slope near mountain top. Very common. Flowers pale yellow, very fragrant. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 922.