Son La Prov., Moc Chau Distr., Chieng Son comm., about 1 km to NE from Chieng Son village, around point 20°46′02.0N 104°37′03.1E. Remnants of primary broad-leaved evergreen forest on tops of hills composed with karstic highly eroded yellow-white limestone at elevation 1100-1050 m a.s.l. Creeping epiphyte and lithophyte on hill top. Not common. 29 September 2016 CPC 8123c (living plant with no herbaria). Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.V.Maisak, N.T.Son.
Flowered in 12 September 2018. Sepals and petals almost white speckled with pink; lateral sepal outside yellowish; petals purple spotted along veins; lip heavily purple spotted; column white, purple spotted at front; anther yellowish. Photos L.Averyanov. Hoya sp. CPC 8123d (“small leaf H. lyi??”) Hoya sp. CPC 8123e (“very small leaf like Dischidia ??”) Hoya sp. CPC 8123f (“large leaf H. ovalifolia??”)