Luang Prabang prov., Pon Xay distr., Nam Bo village, around point 19°57′23.5′'N 102°26′16.4′'E.
Degraded primary evergreen and semideciduous forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 650-750 m a.s.l.
Terrestrial ephemeroid tuberiferous herb on rocky mountain slope. Leafless peduncle olive=-brownish with whitish spots. Not common.