This grower is sure of this plant identification.
A shorter and much smaller variety
Carrion flower, Starfish flower
Stapelia genus (Carrion flower). There are about 45 species of clump-forming perennial succulents with upright 4 angled stems. The flowers are wide open and star-shaped, and will bloom in red, brown and purple.
They are frost-tender species with a min of 11C. Plant in full sun or partial-shade with moderately fertile, very well-drained soil.