The stems of Euphorbia pulvinata, usually hidden, appear like tortoise limbs when exposed like this. The plant edges normally creep, adhering closely to flat rock, the perimeter stem-tips hugging the surface as they do on open ground.
One plant may consist of several thousand very similar stem-tips developed over many years, although different plants may grow together and merge in appearance, covering a few square meters. This may make it difficult to determine where one plant ends and the next begins; each plant growing branches from a single, central stem and root system.
The specific name, pulvinata, is derived from the Latin word, pulvinus, meaning cushion or pillow, referring to the mound-shape achieved by the multitude of stem-tips over time.
All parts of E. pulvinata exude a milky latex when the surface is damaged. This white sap should be avoided due to its toxicity (Frandsen, 2017; Smith, et al, 2017; Pooley, 1998; iNaturalist; http://www.llifle.com; https://www.plantbook.co.za; https://worldofsucculents.com).