Family

Fabaceae

Distribution

Discontinuous in the wheatbelt from the Coorow–Watheroo area, and c. 180 km SE to the Northam–Quairading area, W.A.

Description

Phyllodes sessile, decurrent, terete to quadrangular in section, occasionally subflat, strongly curved to circinnate or serpentinous, 5–13 cm long, 0.8–1.5 mm wide, 8-nerved. Bracteoles obtuse. Pods submoniliform.

Habitat

Grows in red sandy loam, loam, sand, clayey sand and gravel, in heath and remnant roadside vegetation.

Specimens

W.A.: c. 19 km S of Coorow on Midlands Rd, C.Chapman 3 (BRI, CANB, MEL, NSW, PERTH); 17.7 km N of Watheroo, R.T.Lange 2 (PERTH); 3.2 km W of Quairading on the road to York, B.R.Maslin 489 (CANB, K, MEL, PERTH).

Notes

Terete phyllode forms of A. tetraneura could be confused with subsp. lirellata. Acacia tetraneura is most readily distinguished by its 4-nerved, non-decurrent phyllodes and conspicuous bracteoles. Also related to A. aprica and A. arcuatilis but distinguished from both by its decurrent, deeply furrowed phyllodes.

FOA Reference

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

Author

A.R.Chapman, B.R.Maslin