Senecio humidanus C.Jeffrey

S. hygrophilus is very closely allied to, and closely resembles, S. adnatus, but is distinguished by its leaves, elliptic, elliptic-lanceolate or oblanceolate, broadest in the middle or upper half, not lanceolate nor linear and broadest in the lower part or with margins nearly parallel. The main stem leaves are usually c. 9-16 cm long, 3-7.5 cm broad, but can be as narrow as 2 cm, when difficulty may arise in distinguishing S. hygrophilus from S. adnatus. Although the two species occupy the same geographical area, they have strikingly different habitat preferences, S. hygrophilus favouring damper situations than S. adnatus.