Senecio cadiscus
 Senecio cadiscus is a species of flowering plant in the aster family Asteraceae. It is endemic to the Western Cape of South Africa where its fragmented populations are threatened and declining.This is an aquatic plant that grows in vernal pools. It is floating or emergent and sometimes terrestrial along the pool margins. Young plants are submerged. Flowering occurs in August and September.The plant has narrow floating leaves and white ray florets.