Adromischus marianiae is a very variable species reaching a height of 10–15 centimetres (3.9–5.9 in).

This perennial succulent and slow-growing subshrub has usually thin and short branches and forms a small cluster of rough, warty and nearly spherical leaves resembling dried raisins, quite variable in colour but usually green or red-brown or purplish, up to 3.5 cm long.

Flowers are green with a pinkish nuance, about 12 mm long.

[3] Adromischus marianiae grows on granite hills, sometimes inside the cracks of the rocks and in the shade of bushes.

[4] Media related to Adromischus marianiae at Wikimedia Commons