FLORA OF VIETNAM Orchidaceae Bulbophyllum helenae (Kuntze) J.J. Smith
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. Clustering lithophyte on exposed mossy rocks. Not common. 27 September 2016 CPC 8056b Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.V.Maisak, N.T.Son.
Flowered in 25 June 2018. Flowers yellow with brown tint. Living specimens of sterile Bulbophyllum and Sunipia:
Coordinates (geographic position):20° 46′ 2″ N, 104° 37′ 3.1″ E ±1000 mRecord creation: 2019-06-21, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01055563 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01055563