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)
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.
