Pelargonium citronellum

Occurs in the winter rainfall karoo (near Ladismith), near streams on clay. Flowers can also be pinkish purple. Crushed leaves are lemon-scented. Flowers from August to January. 

Pelargonium lobatum

Pelargonium magenteum

Cedarberg (Western Cape, South Africa) on rocky slope with karoid vegetation.

Pelargonium peltatum (Ivy-leaved pelargonium)

Kolsuring [Afrikaans]

Pelargonium salmoneum 

Pelargonium sidoides 

Kalwerbossie [Afrikaans]

Occurs in dry, stony places in short grassland, from Uniondale (in southern Cape) through to Gauteng, South Africa. 

Pelargonium tragacanthoides 

Dassieboegoe [Afrikaans]

Pelargonium sp.

Brenton-On-Sea (probable garden escapee)