Hakea undulata R.Br.

Erect shrub, 1-2 m tall, non-sprouting. Branchlets glabrescent by flowering. Leaves obovate to elliptic, shallowly concave, undulate towards margins, 4-11.5 cm long, 20-65 mm wide, narrowly attenuate at base, spinulose-dentate, acuminate to rounded, slightly greyish green; longitudinal veins 3-7, prominent above and below; secondary venation reticulate, prominent. Inflorescence solitary with 12-21 flowers; pedicels glabrous. Perianth cream-white. Pistil 3-4 mm long; gland vestigial. Fruit obliquely ovate, 2.3-3 cm long, 1-1.4 cm wide, not curved at apex, beaked. Seed ±elliptic, 15-18 mm long; wing extending fully or partly down one side of body only, notched near base, blackish brown.

Found in Eucalyptus (often E. wandoo ) open forest and woodland, in sandy to gravelly clay soil over laterite or sometimes in association with granite outcrops.