Acacia chamaeleon

Acacia chamaeleon is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an openly crowned, sparingly-branched, glabrous shrub with narrowly linear to thread-like or lance-shaped phyllodes with the narrower end towards the base, spherical heads of more or less golden yellow flowers, and linear, firmly papery to thinly leathery pods.

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Acacia chamaeleon is an openly crowned shrub that typically grows to a height of up to 2–3 m (6 ft 7 in – 9 ft 10 in). It is single-stemmed or sparingly branched near ground level. The phyllodes are variable in shape and size, mostly narrowly linear to thread-like, or lance-shaped to narrowly lance-shaped with the narrower end towards the base 60–210 mm (2.4–8.3 in) long and 2–5 mm (0.079–0.197 in) wide. The flowers are borne a spherical heads in four to seven racemes 10–42 mm (0.39–1.65 in) long, on peduncles mostly 4–6 mm (0.16–0.24 in) long. Each head is 5.5–7 mm (0.22–0.28 in) in diameter with 23 to 37 more or less golden yellow flowers. Flowering occurs throughout the year with peaks in May and December, and the pods are linear, firmly papery to thinly leathery, scarcely constricted between the seeds, up to 100 mm (3.9 in) long and 4–5 mm (0.16–0.20 in) wide. The seeds are oblong to elliptic, 4–5 mm (0.16–0.20 in) long with a club-shaped aril.