muelleri is a tree reaching 30 metres tall with a trunk diameter of 75 cm.

Leaf bearing twigs are green coloured with fine flat straight hairs.

New shoots feature bright pink or red leaves and fawn coloured hairs.

Leaves broad lanceolate to elliptic in shape with a leaf stem from 3 to 6 mm long.

Greenish pink flowers form on panicles from the leaf axils in the months of November to January.