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Acacia capillaris

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Acacia capillaris A.S.George, J. Roy. Soc. Western Australia 82: 99 (1999)

Erect shrub to 40 cm high. Stems pilose with white hairs to 1 mm long. Stipules setaceous, 3–4.5 mm long, spreading, yellowish. Phyllodes 14–18 per whorl, erect, somewhat flattened adaxially, 5–9 mm long, with an oblique to almost uncinate mucro 0.3–0.5 mm long, pilose with ascending to spreading white hairs. Peduncles 14–17 mm long, pilose with spreading white hairs that are more flexuose than on vegetative parts. Heads 15–20-flowered. Flowers 5-merous; calyx 0.8–1 mm long, divided for c. half length into triangular obtuse lobes, not or obscurely striate, glabrous; corolla lobes obscurely striate, pilose. Pods on stipe 2–3 mm long, linear, flat but raised over seeds, 1.5–4 cm long, 4–4.5 mm wide, brown, glabrous, not viscid; margins slightly thickened. Seeds 2–8 per pod, longitudinal, obliquely elliptic, 3.5 mm long, black; pleurogram open.

Known from Mt Bell and Scott Gorge, west Kimberley, W.A. Grows in red-brown clay over granite, under Livistona palms near creek and on rocky slopes in savannah–spinifex association. Flowers May.

Closely related to A. lycopodiifolia in its long mucro of the phyllode, hairy corolla and pod with longitudinal seeds. The long, setaceous stipules are especially distinctive. It may be distinguished further by the more numerous phyllodes in the whorl, obscurely striate calyx with triangular lobes, and shortly stipitate pod. At MEL there is a collection labelled ‘near Cambridge Gulf, [W.A.], 1887, W.J.O’Donnell’, but this is probably a generalised locality. See also A. smeringa .

Type of accepted name

Fern Ck, 1.3 km W of Mt Bell, [King] Leopold Ra., W. A., 5 May 1988, R.J.Cranfield 6719 ; holo: PERTH; iso: CANB, K.

Representative collections

W.A.: Mt Bell, J.R.Maconochie 226 (CANB, NT); Scott Gorge, M.J.Sands 4768 (K, PERTH).

(ASG)

WATTLE Acacias of Australia CD-ROM graphic

The information presented here originally appeared on the WATTLE CD-ROM which was jointly published by the Australian Biological Resources Study, Canberra, and the Department of Parks and Wildlife, Perth; it was produced by CSIRO Publishing from where it is available for purchase. The WATTLE custodians are thanked for allowing us to post this information here.

Page last updated: Thursday 22 June 2023