Acacia resinicostata

Acacia resinicostata is a shrub belonging to the genus Acacia and the subgenus Phyllodineae native to north eastern Australia.

The glabrous and somewhat resinous shrub^[1] typically grows to a height of 2 to 3 metres (6.6 to 9.8 ft) and has a bushy, rounded habit. It branchlets have small rounded protuberances and crowded, light green, linear to narrowly oblong shaped flat phyllodes that are straight or incurved. They have a length of 5 to 20 mm (0.20 to 0.79 in) and a width of 0.5 to 1 mm (0.020 to 0.039 in) and are abruptly constricted at the base with an obscure midrib. The simple inflorescences occur singly in the axils and have spherical flower-heads that contain 25 to 35 deep lemon yellow coloured flowers. The firmly chartaceous seed pods that form after flowering have a narrowly oblong shape with a length up to 8 cm (3.1 in) containing longitudinally arranged seeds. The black seeds have an oblong-elliptic shape with a length of 4 to 5 mm (0.16 to 0.20 in) and a cream coloured clavate aril.^[2]

It is a disjunct distribution and is endemic to a small area in the Carnarvon Range in south eastern Queensland^[3] and around 300 km (190 mi) further south between Djuan and Karara where it is found in dissected sandstone country in skeletal soils as a part of open woodland communities.^[2]

• List of Acacia species