Very variable species with the largest flowers in the genus ranging from 100-400 mm in diameter. Clump-forming succulent with fat, green, erect, deeply ribbed stems, up to 200 mm tall and 30 mm thick.
The flowers are large, star-shaped 5-petalled, pale yellow in color, with transverse crimson lines variable in color and covered with purplish or crimson hairs.
It is the most widely north-south distributed species and occurs in Zambia, Malawi, Mozambique, Botswana, Zimbabwe and South Africa.

• Zulu giant / giant carrion plant / giant toad plant
• Flor carroña gigante

Scientific classification
Kingdom:Plantae
(unranked):Angiosperms
(unranked):Eudicots
(unranked):Asterids
Order:Gentianales
Family:Apocynaceae
Subfamily:Asclepiadoideae
Tribe:Stapeliae
Genus:Stapelia
Species:S. gigantea

From my collection

via Flickr https://flic.kr/p/GJqM5B