The variable leaves of Unigenes humifusa are simple, long-stalked and spoon-shaped. The margins are shallowly and variably lobed. The leaf bases attenuate gradually into the petioles. The pale midribs get fainter to the leaf tips on the glossy green blades. Two or three lateral veins ascend on both sides of each midrib, some petering out higher up (Bean and Johns, 2005; Bond and Goldblatt, 1984; iNaturalist).