Senecio abruptus
Senecio abruptus, or the yellow starvation ragwort, is a species of plant that is endemic to the Cape Provinces of South Africa. Description 
This annual grows up to  tall. The leaves range from an elongated oval to toothed to having slightly feathery margins. The base of each leaf may be lobed. The small yellow flowers grow in disc shaped flowerheads. They are present between July and November. Distribution and habitat 
This plant grows on stony slopes between the Cape Peninsula and Clanwilliam in South Africa. References 

Plants described in 1800
Endemic flora of the Cape Provinces
abruptus