| N.
bongso may be found in the mossy mountain forests of
Central Sumatra at altitudes of 1000m to 2800m. Bearing a
close resemblance to N.singalana, N.densiaflora, N.ovata
and N.diatas it has also been described as N.
talangensis. Pitchers are usually green or dark red and
lower pitchers have a ribbed peristome and sparsely
fringed wings. |