FLORA OF VIETNAM Convallariaceae Ophiopogon bockianus Diels 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 1150-1250 m a.s.l. Erect terrestrial herb to 0.5 m tall on shady rocky steep hill slope. Flowers white, anthers light green. Common. 27 September 2016 CPC 8076 Photos. Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.V.Maisak, N.T.Son.