Melaleuca eurystoma is a shrub growing to 1.5 m (5 ft) tall with mostly glabrous branches, leaves and flower parts.
Its leaves are arranged alternately, 4.2–8.7 mm (0.2–0.3 in) long, 3–6.1 mm (0.1–0.2 in) wide, egg-shaped to almost oval with a wedge-shaped base and a rounded end.

The flowers are yellow or greenish-yellow and arranged in heads or spikes on the ends of branches which continue to grow after flowering, sometimes also on the sides of the branches.
The heads are up to 25 mm (1 in) in diameter and composed of 5 to 20 individual flowers.
The petals are 2.5–3.5 mm (0.098–0.14 in) long and fall off as the flower ages.
There are five bundles of stamens around the flower, each with 7 to 15 stamens.
Flowering occurs mainly in early spring and is followed by fruit which are woody capsules 3.5–5 mm (0.14–0.20 in) long.
Melaleuca eurystoma is a shrub growing to 1.5 m (5 ft) tall with mostly glabrous branches, leaves and flower parts. Its leaves are arranged alternately, 4.2–8.7 mm (0.2–0.3 in) long, 3–6.1 mm (0.1–0.2 in) wide, egg-shaped to almost oval with a wedge-shaped base and a rounded end.
The flowers are yellow or greenish-yellow and arranged in heads or spikes on the ends of branches which continue to grow after flowering, sometimes also on the sides of the branches. The heads are up to 25 mm (1 in) in diameter and composed of 5 to 20 individual flowers. The petals are 2.5–3.5 mm (0.098–0.14 in) long and fall off as the flower ages. There are five bundles of stamens around the flower, each with 7 to 15 stamens. Flowering occurs mainly in early spring and is followed by fruit which are woody capsules 3.5–5 mm (0.14–0.20 in) long.
Melaleuca eurystoma