The leaves may be completely whole or deeply lobed with serrated edges or deeply palmate, three-five-seven palmatisect, alternating, stipulated with laterally free stipules, pubescent with variable length from 0.5 to 0.8 centimetres.
The leaf-stalk may be of variable length from 3 to 8 centimetres, finely pubescent on the top surface or silky on the bottom surface, red or green, rough. The lamina, lobed or not, has a non-lobed ovate serrated edge, with an acuminated apex and from 5 to 7 palmate reticulations, sometimes palmately lobed with 5 to 7 deep lobes, each lobe jagged, with a serrated edge, acute apex, a green gland on the central rib at the bottom and the top glabrate and the bottom surface hairy along the ribs, rough.

As already pointed out, kenaf leaves are highly variable in shape.
They can be whole, that is like a single leaf - entirely different to hemp leaves - or palmate, with the leaf-stalk whole, but deeply lobed. Sometimes, one variety, such as for instance in the case of the variety El Salvador, may have a heterogeneous mix of plants with whole leaves and with palmate leaves.
The apex of the leaves is acuminated in the case of both the lobed leaf variety and the whole leaf variety.

From a genetic point of view, the "palmate leaf" characteristic is dominant with respect to the "whole leaf" characteristic. The shape of the edges of the kenaf leaf is very close to that of hemp leaves. The only difference (see page 32) is that the edges of the hemp leaf are toothed, they have small triangular indentations that may or may not be identical, whereas the edges of the kenaf leaf have crenatures, obtuse or rounded teeth.
Kenaf leaves are used as animal feed and also as human food in some sauces of African and Asian cuisine.

Few people know that under the name of Persian origin "Kenaf", the bast of another species is also marketed, rosella (Hibiscus sabdariffa var. altissima) cultivated in tropical and sub-tropical countries under 8 latitude north and south.
Similar to rosella, we have red sorrel (Hibiscus sabdariffa var. edulis) that gives us the red drink called "sorrel tea".
In past years, due to wrong seed imports, the THS2 variety of rosella has been imported from Mali and cultivated in Southern Italy.
Experimental trials to introduce red sorrel into Sicily were carried out in the '80s on the plain of Milazzo.

Main differences seen by observing the leaves
Kenaf leaves, while being extremely variable from whole to lobed, so much as to be dissimilar even on the same plant, if examined carefully it will be seen they are formed of a single leaf - albeit deeply lobed - rather than several blades joined at a point as in the case of hemp leaves.
The differences, apart from in the photos, are clearly shown in the figures below.

Hemp leaves, on the contrary to kenaf leaves, are sticky to touch and are a darker green on the top of the blade. Although kenaf leaves also have this difference between the top and bottom faces, it is more marked on hemp leaves.