Senecio howeanus is an annual, or short-lived perennial, herb in the daisy family, Asteraceae. The specific epithet refers to the type locality.[1]
The plant grows up to 40 cm in height. The leaves are alternate, 4 cm long, 1.2 cm wide. The flowers occur in cymose inflorescences; they have 8–10 yellow outer florets with 15–25 funnel-shaped disc florets. The fruit is brown and 2.2–2.5 mm long.[1]
The plant is endemic. to Australia’s subtropical Lord Howe Island in the Tasman Sea. It is common near the shoreline of the island, including its adjacent islets, with a scattered distribution at higher elevations.[1]