Encephalartos species, but which?

Encephalartos species, but which?

Observation - Encephalartos species, but which? - Southern Africa. Description: One of three distinct species of cycads growing closely in a garden in Johannesburg. I need ID on t

One of three distinct species of cycads growing closely in a garden in Johannesburg. I need ID on the for the purpose of accurately cataloguing them for provincial permit applications. The leaf margins look like that of Encephalartos natalensis - but the 'spikiness' is puzzling. The type species description of E. natalensis don't include spikiness on the leaf margins. It also looks slightly less glossy than E. natalensis with a duller green appearances, as well. Please help with ID.