The Pelargonium longicaule leaf is deeply and variably incised. The stubby lobes are elliptic with pointed or rounded tips, leathery and channelled as is the midrib. There are stipules at the base of the petiole (Manning, 2007; Manning and Goldblatt, 1996; Bond and Goldblatt, 1984; iNaturalist; www.fernkloof.org.za).