FLORA OF LAOS Convallariaceae Polygonatum kingianum Collett & Hemsl.
Houphan Prov., Xon Distr., Nong Hua Pa Noi village, around point 20°13′02.1′'N 103°24′23.3′'E.
Primary and secondary broad-leaved evergreen forest on very steep rocky mountain slopes composed by shaly limestone at elev. 1100-1200 m a.s.l.
Erect terrestrial herb or herbaceous vine to 3 m long on shady rocky slope. Not rare. Widely collected for sale as a medicinal plant of oriental medicine.