Calytrix birdii is a
glabrous shrub that typically grows to a height of . Its leaves are egg-shaped with the narrower end towards the base, to more or less round, long and wide on a
petiole long. There is a
stipule up to long at the base of the petiole. The flowers are arranged singly or in small clusters. The
floral tube has 10 ribs and tightly surrounds the
style that is long. The
sepals are joined at the base with more or less round blades long and wide with an
awn up to long. The petals are purple, egg-shaped, long and wide, and there are 45 to 55 reddish-purple stamens in 4 rows. Flowering occurs from September to November. ==Taxonomy==