Erechtites minumus), commonly known as toothed fireweed[2][3] and coastal burnweed,[4] is a species of plant in the sunflower family.

[2][5][6] Senecio minimus is an annual or perennial herb up to 200 cm (79 in) tall.

[9] There is a leaf base from the mid stem which supports the leaves of the plant[9] which are sized around 80-250mm long and are spaced evenly.

The florets of Secenio minimus have triangular corolla lobes which become thicker apically.

[10] The species has been found in Malbrough, Nelson, Canterbury, Westland and Southland in the South Island of New Zealand as well as in North and South Auckland, Taranaki, Gisborne, Hawkes Bay and Wellington in the North Island.

[10] Senecio minimus is most commonly found in and around coastal habitats with forest or bush cover.

Senecio minimus fruit throughout the year but most often produce during late summer and early autumn.

The capitulum is the head of a stalk, which consists of a flat, dense cluster of small florets.

Senecio minimus is the host to three endemic herbivores: The magpie moth (Nyctemera annulata), the blue stem borer (Patagoniodes farnaria), and the Senecio gall fly (Tephritis fascigera).