WATTLE

Acacias of Australia

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Acacia zatrichota A.S.George

Family

Fabaceae

Distribution

Occurs in the Purnululu (Bungle Bungle) Natl Park and Winnama Gorge, south-eastern Kimberley, W.A.

Description

Shrub to 1.5 m high, erect. Branchlets densely pilose with white hairs. Stipules spreading, subulate, 0.5–2.8 mm long, brown. Phyllodes 16–20 per whorl, erect, straight to incurved, terete, 8–18 mm long, with an oblique mucro 0.2–0.4 mm long, pilose with spreading yellowish hairs, obscurely 1-grooved adaxially. Peduncles 23–30 mm long, sparsely pilose with white hairs. Heads c. 30-flowered. Flowers 5-merous; calyx 0.7–0.8 mm long; calyx lobes short, narrow, smooth, glabrous; corolla glabrous except for hirsute smooth to faintly striate lobes. Pods sessile, linear, not viscid, not seen mature. Seeds (not seen mature) 3–6 per pod, transverse.

Phenology

Flowers June–July.

Habitat

Grows in dissected sandstone, with open woodland or shrubland usually with Triodia.

Specimens

W.A.: Bull Ck, Bungle Bungle Natl Park, G.N.Cowie 924 (DNA); Swamp Ck, Winnama Gorge, S.J.Forbes 2527 (BRI, MEL).

Notes

A distinctive species with large hairy phyllodes and large heads. The glabrous bracts and calyx are characteristic. It is related to A. hippuroides which as fewer phyllodes per whorl and normally yellow hairs on the branchlets.

FOA Reference

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

Author

A.S.George