Pelargonium pseudoglutinosum is a branched, single-stemmed shrub that reaches heights around 1 m and spreads to 1,25 m in diameter. Young stems are soft, some older, lower ones tend to become woody.
As the name suggests, this plant resembles P. glutinosum, but characteristically bears only single or paired flowers per inflorescence. Like several other species of Pelargonium the flower has two pink to very pale pink posterior (upper) petals with dark purplish markings low down and three anterior (lower) ones lacking the markings.
This plant is found in nature in a limited area of the Western Cape, in the Little Karoo east of De Rust to west of Uniondale.
The habitat is moist valleys where the plants mainly grow in shade. The habitat population is deemed of least concern early in the twenty first century.
The plant was once called P. uniondalense (Vlok and Schutte-Vlok, 2015; iNaturalist; https://pza.sanbi.org; www.tropicos.org; http://redlist.sanbi.org).