FLORA OF LAOS Urticaceae Pilea sp.nov.? (“P. cobra”) Vientiane Prov., Kasi Distr., Namken village, Phachao Mt., around point 19°18’45.5”N 102°22’31.4”E. Primary broad-leaved evergreen forest on very steep rocky slopes of remnant mountain composed with highly eroded solid crystalline limestone at elevations 1500-1750 m. Lithophyte on shady flat boulders under cave at elevation 1500 m. Very rare. LA-VN 784 24 March 2013 Coll.: L.Averyanov, N.S.Khang, S.Lorphengsy