Grielum ? which species

Grielum ? which species

Observation - Grielum ? which species - Southern Africa. Description: This specimens growth habit and appearance unlike the usual Pietsnot.. Robust creeping growth from central point. No obvious intermodal rooting. Flowers: spiral unfurling. Chocolate-red lining in throat. Very floriferous. No fruit unfortunately. The leave

This specimens growth habit and appearance unlike the usual Pietsnot.. Robust creeping growth from central point. No obvious intermodal rooting. Flowers: spiral unfurling. Chocolate-red lining in throat. Very floriferous. No fruit unfortunately. The leaves are silvery-hirsute above. Stems are glabrous and quite succulent proximally.
I think I'm veering towards Grielum humifusum v humifusum