Back two or so years ago I found this shrub in the Marquard district and took a branch back home to ID it (didn't know it at the time).
The branch had a pod or two on and after about a week or so I found some seed lying on my desk. The pods had exploded open (as the Indigoferas like to do) and I decided to plant the five or so seeds. Two of them came up and this year they have started to flower.
The are both growing happily in pots at the moment. This is a shrub that is worthy to be cultivated in gardens.
EDIT 09/2020: I cannot remember exactly where I collected this, but here are coordinates of a likely locality: -28.548609, 27.487158. I would ascribe at minimum a 5 km radius accuracy of this GPS point.
SM191. 100cm, single-stemmed, sprawling, many-branched.
S side of river along Panorama trail. Pathside among tall Protea neriifolia stand. Reddish sandstone.
SM194. 40cm, single-stemmed. Flowers peachy orange grading to yellowish near lobes, non-sticky, smooth textured. In full flower. Corolla lobes finely dentate.
N facing slope on outcrop. Quartzite.
SM411. Ca. 120cm ss mb. Possibly collected previously (SM191). In early flower or bud