Pelargonium tetragonum leaves are often absent from the tangled stems, as the plants tend to live in semi-arid regions where their leaves drop off early. The leaves are stalked and alternate as Pelargonium leaves usually are.
The succulent blade is deeply and angularly lobed, here a dull grey-green with a hint of yellow in its colouring. The slightly sunken veins positioned purposefully like rivulets up the lobes, remind of the lines in the human hand.
Sparse stubble is perceptible along some margin parts (Vlok and Schutte-Vlok, 2015; iNaturalist).