It has smooth bark on the younger stems, narrow egg-shaped leaves with the narrower end towards the base, white flowers and fruit that has the remains of the sepals attached but usually falls from the plant soon after the seeds are released.

The floral cup is about 4 mm (0.16 in) long on a very short pedicel and is usually silky-hairy only on the lower half.

Flowering mainly occurs from October to November and the fruit is a hemispherical capsule 4–6 mm (0.16–0.24 in) wide with the remains of the sepals attached, but which fall from the plant soon after the seeds are released.

[2][3][4][5] This species was first formally described in 1847 by German botanist Diederich von Schlechtendal who gave it the name Leptospermum myrsinoides in the journal Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde.

[6][7] In 2023, Peter Gordon Wilson transferred the species to the genus Gaudium as G. myrsinoides in the journal Taxon.