Family

Fabaceae

Distribution

Occurs from Yallingup and Boyanup S to near Augusta and Nannup, south-western W.A.

Description

Shrub 0.3–1 m high. Branchlets yellow-ribbed, glabrous to sparsely antrorsely puberulous or shortly pilose. Phyllodes inequilateral, obtriangular to shallowly obtriangular with a prominent gland-bearing angle on adaxial margin, with adaxial proximal margin ±contiguous with branchlet, 4–6 mm long, 3–6 mm wide, sometimes to c. 15 mm long and 10 mm wide, pungent, glabrous, occasionally puberulous; midrib near abaxial margin, often with a faint second nerve. Inflorescences simple, 1 per axil; peduncles 2–4 (–5) mm long, glabrous; heads globular, 4-flowered, cream to pale yellow; bracteoles sessile, acuminate; buds attenuate, rather angular when dry. Flowers 4‑merous; sepals 1/2–2/3-united, with aristate lobes; petals prominently 1-nerved. Pods narrowly oblong, curved, to 7 cm long, c. 4 mm wide, coriaceous-crustaceous, blackish, glabrous; margins thick. Seeds longitudinal, ±oblong, 3–4 mm long, glossy, brown, arillate.

Habitat

Grows in sand, often in swampy areas and along creeks, in open eucalypt forest.

Specimens

W.A.: 1 km S of Yallingup, R.J.Cumming 900 (PERTH); Swan R., J.Drummond 2: 160 (A, BM, CGE, G, K, LUND, MEL, P, PERTH); 20.3 km W of Donnybrook towards Capel, B.R.Maslin 456a (CANB, PERTH).

Notes

Readily distinguished from other members of the ‘A. biflora group’ by its aristate calyx lobes, see B.R.Maslin, Nuytsia 2: 305 (1978), for additional distinguishing features.

FOA Reference

Data derived from Flora of Australia Volumes 11A (2001), 11B (2001) and 12 (1998), products of ABRS, ©Commonwealth of Australia

Author

Minor edits by B.R.Maslin & J.Rogers

B.R.Maslin