The plant grows from an underground tuber, with several smaller tubers. These have been used to treat diarrhoea or dysentery.
As you can see, the leaves are deeply divided and carrot-like.
Pelargonium triste is found in sandy soils in the western regions of the Cape Peninsular. Here in the UK my plant has just produced leaves and will, hopefully, flower early in the new year. When the flower fades, so do the leaves and then I just put the plant under the bench and forget all about it until September when I see leaves beginning to appear. It really does have a very sweet scent at night, and just one plant will fill my small conservatory with scent during the evening.