O. cuneifolia is a variable species growing to tall. The papery leaves are
elliptic to
obovate-elliptic in shape with a pointed tip and
cuneate base, measuring by . The
leaf veins are raised, with pit-shaped
domatia along the secondary veins. The
inflorescence measures long and is somewhat hairy. The staminate flowers measure in diameter and bear nine
stamens, while the pistillate flowers measure in diameter with a long
pistil. The flowers may be reddish or yellow-green in colour. The fruits measure by . ==References==