Is this street spinach ?
Is this 'weed' edible ?
One hears about a local form of wild Amarinth that has been enjoyed as a leaf vegetable since time immemorial and has many indigenous names like 'marog'. In my ignorance I had always associated Amarinth with South America's dramatic and highly bred species eaten for their seeds or cultivated for decoration. This Amarinth grows through the cracks of street paving locally. I find pictures of similar looking plants under 'pests'. Various species look right and could fit the picture: A. blitum, A. retroflexus, A. viridus. I found another possibility, though it grows wild in the Natal midlands, a delicacy Imbuya – Amaranth Amaranthus hybridus on the fantastic website https://plantabundance.wordpress.com/tag/edible-weeds/