Leucospermum mundii is an evergreen, upright, rounded and richly branching shrub of 1⁄2–1 m (1+1⁄2–3 ft) high that is assigned to the family Proteaceae.

[2] Leucospermum mundii is an upright, rounded and richly branching shrub of 1⁄2–1 m (1+1⁄2–3 ft) high, that develops from a trunk at its base.

The lowest, fully merged, part of the perianth, called tube is dull carmine in colour, 8–10 mm long, narrow cylinder-shaped and hairless at its base and inflated and powdery hairy higher up.

The upper part (or limbs), which enclosed the pollen presenter in the bud, consists of four pale green, pointy, elliptic to lance-shaped lobes of about 1+1⁄2 mm (0.06 in) long.

[3] Leucospermum mundii differs from all other taxa in the section Crinitae by its broad wedge to inverted egg-shaped leaves, topped by seven to seventeen teeth.

[5] Leucospermum mundii can be found in the Langeberg mountain range, where it is known from only a few localitions, between Garcia's Pass, above Riversdale and Goedgeloof Peak, above Swellendam, where it grows on northern slopes in southwest facing gorges at 300–900 m (1000–3000 ft) altitude.

The plants grow in a dense fynbos vegetation that further is dominated by several Restionaceae, Protea eximia, P. neriifolia, and Leucadendron eucalyptifolium.