Acacia glutinosissima is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to western Australia.
The spindly. open, sparingly branched and viscid shrub typically grows to a height of 1.8to. The branchlets have a rough texture formed by stem-projections where phyllodes were once attached. Caducous stipules that are linear and have a length of also cover the branchlets. It has ascending to erect green to yellowish green phyllodes that are linear to shallowly incurved. Phyllodes are in length and wide. It produces yellow flowers from July to September. The spherical flower-heads contained 40 to 55 densely pack golden flowers. The linear seed pods that form after flowering have a length of up to and a width of containing oblong to elliptic shaped seeds with a length of .
It is native to an area in the Wheatbelt region of Western Australia where it is found on rises and on sandplains growing in gravelly, sandy and lateritic soils. It has a scattered distribution from around Wubin in the north to around Bruce Rock in the south growing in open scrub.[1]