Acacia producta Tindale, Telopea 2: 116; 117, fig. 2 (1980)
Erect or prostrate, resinous shrub to 2 m high. Bark smooth, dark grey. Branchlets angular towards apices, with resin-crenulated ridges. Phyllodes narrowly oblanceolate to elliptic, straight or slightly curved, 3–8 cm long, 5–15 (–23) mm wide, (young phyllodes apically resinous), usually with 3 prominent, longitudinal nerves (1 nerve often becoming confluent with ventral margin towards base), with 2–4 subprominent, longitudinal nerves, the minor nerves 2–4 per mm, sometimes anastomosing; gland 1, conspicuous, basal. Inflorescences simple, 1 or 2 (rarely 3) in axils of reduced phyllodes; peduncles 3–25 mm long; heads globular, 5–13 mm diam., 14–39-flowered, yellow or bright yellow. Flowers 5-merous; calyx 0.5–1.2 mm long, scarcely dissected, with few hairs on lobes; corolla 1.5–2.5 mm long, dissected to c. 1/3, glabrous, with prominent petal midrib; ovary pubescent. Pods erect, narrowly oblanceolate to linear, tapered basally, 3–7.5 cm long, 3.5–8 (–12) mm wide, brown, obliquely nerved; margins prominent. Seeds oblique, oblong-elliptic, 3–7 mm long, dark brown; funicle-aril turbinate.
Occurs in the Top End of the N.T. and on Maria Is., Gulf of Carpentaria, N of 17S, between 132E and 13620’E. Usually found on alluvial flats or rocky sandstone plateaux with extensive rock pavements, on laterite, in sand, sandy loams, kaolinitic soils or sandy silts, in heaths or eucalypt woodlands. Flowers in all months.
This is a polymorphic member of the ‘ A. stigmatophylla group’ with globular inflorescences. There is considerable variation in the populations of A. producta . Both erect and prostrate forms exist, but there is some inconsistency within these groups in the shape and spacing of the phyllodes, the nervation of the phyllodes and the number of flowers per capitulum.
Type of accepted name
Near the Caravan Park, Katherine Natl Park, N.T., M.D.Tindale 6080 & C.Dunlop ; holo: NSW; iso: CANB, DNA, K.
M.D.Tindale, loc. cit .; J.Brock, Top End Native Pl . 73 (1988).
N.T.: 5 miles [8 km] NE [of] Goyder R. Crossing, N.Byrnes 2643 (NSW, NT); Jim Jim Ck, Kakadu Natl Park, C.R.Dunlop 5549 (CANB, DNA, NSW); 13 km SSW of Twin Falls, Kakadu Natl Park, M.Lazarides 8974 (CANB, DNA, NSW); levee of Katherine R., Stuart Hwy, M.D.Tindale 6041 & C.Dunlop (A, AD, BRI, CANB, DNA, MEL, PERTH, US).