Acacia argyrotricha Pedley, Austrobaileya 5: 310 (1999)
Spreading shrub to c. 2 m high. Branchlets angular, with dense, appressed hairs. Phyllodes linear, flattened, straight or slightly falcate, thick, 10–15 cm long, 1–1.8 mm wide, shortly mucronate, with indumentum of appressed hairs when young, glabrescent or hairs retained in patches or along midline, multistriate, with nerves not anastomosing; gland basal; pulvinus stout, c. 1 mm long. Heads in pairs on a short axillary axis, 30–40-flowered, deep yellow; peduncles 2–2.5 mm long, pubescent; basal bract wide, concave, deciduous, c. 1 mm long. Flowers 5-merous; calyx c. 1 mm long, lobed to about middle, ciliolate; corolla c. 1.5 mm long, c. 1/3 lobed, glabrous; stamens 3–4 mm long; ovary glabrous. Pods linear, raised over seeds, to 7.5 cm long, c. 2.5 mm wide, coriaceous, with patchy indumentum of silvery appressed hairs. Seeds longitudinal, oblongoid, 3–4 mm long, 1.7–2 mm wide; aril terminal, cupular.
Known only from the type locality in Qld, where it occurs in sandy soil in eucalypt woodland. Flowers Sept.–Oct.; fruits Dec.
Acacia argyrotricha resembles A. rigens but differs notably in the appressed hairs of the branchlets and young phyllodes; the indumentum is often retained in patches on and along the midline of old phyllodes. Its flower-heads are also larger and borne on longer peduncles.
Type of accepted name
S of Inglewood, Bracker State Forest, Darling Downs District, Qld, 2836’S, 15102’E, 16 Sept. 1989, A.R.Bean 1115 ; holo: BRI.
Representative collections
Qld: Bracker State Forest, S of Inglewood, A.R.Bean 1023 & 2735 (BRI); loc. id., M.E.Ballingall 2683 (BRI, PERTH); loc. id., K.M.Sparshott KMS370 & P.E.Sparshott (BRI, DNA, NSW).
(LP)
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.
