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Acacia incurva

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Acacia incurva Benth., London J. Bot . 1: 325 (1842)

Erect, multistemmed subshrub 0.2–0.4 m high, sometimes procumbent. Stems angled, glabrous to sparsely appressed-puberulous, tomentulose in phyllode axils, slightly scabridulous. Stipules 1–3 mm long. Phyllodes continuous with branchlets, trifariously decurrent and forming very narrow wings to 1 mm wide; free portion of phyllodes linear to linear-lanceolate, commonly patent and shallowly incurved, sometimes straight or recurved, 10–50 mm long, 1–2 mm wide, acuminate, pungent, rigid, with indumentum as on branchlets; midrib prominent; gland not prominent, 1–6 mm above base. Inflorescences simple; heads sessile, globular, 6–11-flowered, bright yellow. Flowers 4-merous; sepals united, 1/4–1/3 length of petals, dark brown; petals obscurely 1-nerved. Pods terete, to c. 7 cm long, 2 mm diam., crustaceous, reddish, longitudinally nerved, appressed-puberulous, recurved upon dehiscence. Seeds not seen.

Occurs from Perth to Bridgetown, also Albany- Denmark, south-western W.A. Grows in sand or clay loam, in swamps or winter-wet areas, in open woodland.

Specimens with shortest phyllodes, including the type of A. brachyptera , occur in the Albany- Denmark area. Herbarium specimens can be confused with short phyllode forms of A. trigonophylla which are distinguished by their taller stature, pedunculate, 28–32-flowered heads, 5-merous flowers and submoniliform pods.

Type of accepted name

Vasse R., W.A., Mrs Molloy ; holo: K; probable iso: CGE, field label attached, presumably written by Mrs G.Molloy, dated 29 Sept. 1840.

Synonymy

Acacia brachyptera Benth., London J. Bot . 1: 325 (1842); A. incurva var. brachyptera (Benth.) Benth. , Fl. Austral . 2: 322 (1864). Type: King George Sound [Albany], W.A., 1818, A.Cunningham s.n .; holo: K; iso: BM,

Illustration

M.Simmons, Acacias Australia 2: 31 (1988).

Representative collections

W.A.: 7 km SE of Yornup, G.J.Keighery 3991 (PERTH); Yoongarillup, between Busselton and Nannup, G.J.Keighery 7797 (PERTH); 24 km W of Denmark, B.R.Maslin 2942 (CANB, PERTH); In arenosis apertis inter frutices densos haud longe a villa col. Erwin [Middle Swan, Perth], L.Preiss 990 (C, CGE—sphalm. ‘244’, FI, G, GOET, HBG, K, L, LUND, M, MO, NAP, NY, P, STR, TCD—sphalm. ‘244’, W).

(BRM)

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: Tuesday 11 September 2018