Siempre la misma cuestion parece que Moni no quiere dar el brazo a torcer en esta... jajaja

asi que me remito a los hechos y busquedas.
Yo aseguraria que S. scitula no es.... tal como te dije en este post que vuelvo a copiar:
Por lo que veo en la web, los tallos son mas finos y con los bordes mas marcados, y la flor es claramente mas pequeña.
Te pongo un par de fotos de Internet para que compares junto con el vinculo a la pagina de donde lo tome:
http://www.succulents.co.za/Asclepiadaceae/stapelia/stapelia_scitula.htm
Y la que subio Mari hace algun tiempo cuando tambien salio este tema del sitio de Matin Heigan (uno de los mas grosos en Asclepiadaceas):
http://anti-matter-3d.com/Stapeliads/Stapeliad_Gallery.html
Aqui la descripcion en ingles:
Stapelia scitula - L.C. Leach
Distribution: This species is restricted to a small area near Langvlei in the Robertson District.
Description: The plants form small neat clumps, stems branch at the base,the erect and slender stems are ±75mm in height and ±5mm thick, stems are densely and shortly pubescent, four angled (rounded) more or less flat-sided when young becoming sub-cylindric with age, stems are green when young becoming purplish as they mature, tubercles slightly prominent, growth often extends from the apex of old growth. Leaves are deciduous, pubescent and ovate-acute in shape (1 - 1.5mm in length), stipular glands usually cream in colour.
Flower: Flower borne on an inflorescence that is a fully developed cyme. The pedicel is 9-15mm in length and it is densely pubescent. Corolla is highly pubescent and the lower parts of the corolla lobes are rugose, corolla margins are ciliate, the flower is magenta to maroon in colour, corolla lobes are ovate-acuminate. Corona shortly raised on a five-ribbed pederstal, outer corona lobes pale brown , inner lobes are erect, blackish purple.
Cultivation: Shade/sun, little to moderate water
Saludos
Sergio