Asia-Tropical: Malaya (Peninsular Malaysia present), N Sumatra present, Peninsular Thailand present
Peninsular Thailand; Malesia: N Sumatra, Malay Peninsula.
This species always grows in association with H. pinnatum and may be of hybrid origin, possibly H. pinnatum × H. sagenioides, in which case it would be a triploid. Experimental evidence is desirable. The type is smaller than the Peninsular specimens from which the above description is drawn but otherwise agrees with them.