Slangbos (snake bush, bankrupt bush) is a small shrub that invades grazing land. In cattle farming operations it can completely invade grass land and push out the grass entirely. This mainly occurs as it is not palatable for cattle so they don’t eat it, but they do remove the competing grasses.
A bad infestation:
Some people promote the use of poisons again Slangbos : Chemicals: the best weapon against slangbos. Goats, however, find Slangbos very tasty and readily graze the growing tips of the plant. So while they don’t eradicate the plant completely, as the stem is very woody, they do keep it under control so that grasses and other plants grow amongst the slangbos. I don’t see many new plants establishing, so I would imagine that after some time the goats may graze the plant so that very few remain. The area below was quite choked at a stage, and almost completely covered over but the goats have grazed it back and grasses are regrowing in between.
If you break the plant and smell it it is quite aromatic so I would think that it is probably quite nutritious and likely has medicinal properties.