The leaves are needle-shaped, rigid, thick and 1–7 cm (0.39–2.76 in) long, 1.1–2.5 mm (0.043–0.098 in) wide ending in a sharp, erect point.

The young fruit are smooth and as they age ,the surface becomes covered in thick angular cork outgrowths.

[3][4][5] This species was first described by Robert Brown in 1810 and published the description in Transactions of the Linnean Society London.

[6][7] The specific epithet obliqua is derived from the Latin obliquus - "oblique, referring to the nectar gland which is on a slant from the flower axis".

[3] Hakea obliqua is found in southern Western Australia from the Stirling Range to Albany area to Israelite Bay and inland to Pingrup.