[2] It is named in honor of American botanist Sara Plummer Lemmon, 1836 – 1923.

[4] Baccharis plummerae is a bushy shrub producing many erect, slender stems approaching 2 metres (6.6 ft) in maximum height.

[5][2] The leaves are linear to oblong in shape and sometimes have fine teeth along the edges.

[2] The shrub is dioecious, with male and female plants producing flower heads of different types.

The head is enclosed in a layer of phyllaries which are glandular and sticky.