Acacia sericoflora Pedley, Contr. Queensland Herb . 15: 16 (1974)
Shrub or tree to 3.5 m high. Bark smooth, slightly rough at base. Branchlets angular, stout, densely grey-sericeous. Phyllodes very narrowly elliptic to elliptic, flat, straight 12–19 cm long, 8–28 (–35) mm wide, thinly coriaceous, sericeous when young, less so with age, with 2 prominent main veins free to base, the minor veins 2 per mm conspicuously and loosely reticulate, the interstices narrow and elongated; glands 2, 1 prominent, round, basal and to 7 mm from pulvinus, the other small and 1–2.5 cm from apex on dorsal margin. Spikes 2–4.5 cm long, sparsiflorous. Flowers 5-merous, sericeous; calyx 0.7–0.9 mm long, dissected to 1/3; corolla 1.5–1.9 mm long, dissected to 1/3; ovary densely sericeous. Pods linear, twisted and coiled, c. 3 mm wide. Seeds longitudinal, c. 4 mm long; areole large, open.
Restricted to western Arnhem Land, Kakadu and Katherine Gorge Natl Parks, N.T., between Oenpelli and Edith Falls. Grows in deep sand or clayey soil, within the flood zone of creek beds or on escarpments, in Eucalyptus woodland scrub with Melaleuca and Triodia , often in large stands. Flowers June–mid-July.
Related to A. holosericea .
Type of accepted name
Pine Creek–Oenpelli road, 6.4 km E of Mary R., N.T., May 1968, N.Byrnes 781 ; holo: BRI.
Illustration
J.Brock, Top End Native Pl . 73 (1988).
Representative collections
N.T.: upper reaches of Cooper Ck, Spencers Ra., K.Bishop (NSW); Twin Falls, Kakadu Natl Park, C.Dunlop 6733 & G.Wightman (AD, BRI, DNA, K, MEL, NSW, PERTH); Jim Jim Ck, C.Dunlop 6749 & G.Wightman (AD, BRI, CANB, DNA, K, NSW); tributary of Alligator R., I.Olsen 2726 (NSW).
(NSW)