Orchidaceae

Bulbophyllum helenae (Kuntze) J.J.Smith

Dien Bien Prov., Tua Chua Distr., Sin Chai Municipality, around point 22°03’38”N 103°19’56”E. Primary humid evergreen broad-leaved forest on very steep rocky slopes and on tops of remnant mountain composed with highly eroded marble-like solid crystalline limestone at elevation 1350-1500 m a.s.l. Epiphyte. Occasional.

CPC 982a/3 14 December 2010

Coll.: L.Averyanov, P.K.Loc, P.V.The, N.T.Vinh.

Fl. under cultivation at August 2013. Flowers with strong unpleasant smell; median sepal and petals dull yellow with dark purple-brown margin and small spots; lateral sepals orange-brown with dark orange-brown marks; lip light yellow with many small purple marks; column yellow with purple-brown stripes; anther pink to light dirty purple. L.Averyanov. Photos.