The leaves of Convolvulus farinosus are alternate and simple, growing on stalks of about 1,5 cm long.
The leaf is arrow-shaped with pronounced, angular or rounded basal lobes and a tapering to narrowly attenuating, extended tip that is acutely pointed. Leaf dimensions are from 4 cm to 9 cm long and from 3 cm to 7 cm wide.
The yellow-green to olive-green blades are concave above and faintly hairy all over. They are grey-green and paler below. The margins are sometimes bluntly and unevenly toothed, in picture hardly uneven.
The leaf midrib, a few ascending lateral veins and two pairs of veins emerging more or less from the base are all sunken on the upper surface. Some net-veining is also visible.
The fleshy petioles and stems are faintly hairy (Pooley, 1998; Moriarty, 1997; Leistner, (Ed.), 2000; iNaturalist; http://tropical.theferns.info).