It has smooth, pale grey over pale brown bark, lance-shaped to oblong adult leaves, pendulous, solitary, red flower buds in leaf axils, yellow flowers and winged fruit that is square in cross-section.Eucalyptus dolichorhyncha is a mallet that typically grows to a height of 1–6 m (3 ft 3 in – 19 ft 8 in) but does not form a lignotuber.

[3][4] Fuchsia gum was first formally described in 1973 by Ian Brooker who gave it the name Eucalyptus forrestiana subsp.

dolichorhyncha and published the description in the Journal of the Royal Society of Western Australia.

[4] Eucalyptus dolichorhyncha has a limited range on flats in a small area along the south coast of the Goldfields-Esperance region of Western Australia north of Esperance where it grows in sandy clay or clay soils.

[3] This mallet is classified as "Priority Four" by the Government of Western Australia Department of Parks and Wildlife,[3] meaning that is rare or near threatened.