It is a spreading shrub with linear leaves and bright pink flowers arranged singly in leaf axils, with 35 to 55 stamens in several rows.

Hypocalymma puniceum is a spreading shrub that typically grows up to 0.1–1 m (3.9 in – 3 ft 3.4 in), high and wide, its young stems four ridged to slightly four-winged.

[2][3][4][5] Hypocalymma puniceum was first formally described in 1924 by Charles Gardner in the Journal and Proceedings of the Royal Society of Western Australia from specimens he collected near Bendering in 1922.

[8] This species of Hypocalymma is found from Ballidu to near Lake Grace in the Avon Wheatbelt and Mallee bioregions of south-western Western Australia, where it grows in lateritic sand or gravel in mallee shrubland, shrubland or heath.

[3][2][5] Hypocalymma puniceum is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.