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Flora of Australia Online

Banksia oblongifolia Cav., Anales Hist. Nat. 1: 225 (1800)

Banksia integrifolia var. oblongifolia (Cav.) Domin, Biblioth. Bot. 89: 598 (1921). T: Port Jackson (Sydney), N.S.W., Mar.–Apr. 1793, L.Née ; lecto: MA, fide A.S.George, Nuytsia 3: 300 (1981) as to vegetative specimen; the inflorescence on the sheet is here (Fl. Australia Vol. 17B) excluded, being Banksia marginata .

Banksia salicifolia Cav., Anales Hist. Nat. 1: 231 (1800). T: near Botany Bay, N.S.W., Mar.–Apr. 1793, L.Née ; lecto: MA, fide A.S.George, Nuytsia 3: 301 (1981).

Banksia latifolia var. minor Maiden & Camfield, Proc. Linn. Soc. New South Wales 23: 265 (1898); Banksia robur var. minor (Maiden & Camfield) Maiden & Betche, Census New South Wales Pl. 63 (1916); Banksia oblongifolia var. minor (Maiden & Camfield) Conran & Clifford, Brunonia 10: 186 (1987). T: Kogarah, N.S.W., June 1897, J.H.Camfield ; neo: NSW 138266, fide A.S.George, Nuytsia 3: 301 (1981).

[Banksia asplenifolia auct. non Salisb.; N.C.W.Beadle et al. , Fl. Sydney Region revised edn 220 (1972)] 

Illustrations: C.E.Rosser & A.S.George, Banksias I: pl. 8 (1981); A.S.George, Banksia Book 3rd edn, 66–68, fig. 8, pl. 28 (1996).

Shrub to 3 m tall, with lignotuber. Bark smooth, grey-brown. Stems tomentose, rusty becoming grey. Leaves alternate; petiole 2–5 mm long; lamina oblong to obovate, commonly 5–11 cm long, 1.5–2 cm wide, obtuse or truncate; margins slightly recurved, commonly serrate with teeth 1–2 mm long; upper surface densely rusty-tomentose, glabrescent; lower surface tomentose, with nerves glabrescent and pits woolly. Inflorescence terminal to a 1–5-year-old branchlet, 5–15 cm long; involucral bracts densely tomentose, persistent. Flowers pale yellow, often with blue-grey tinge; style cream. Perianth 21–26 mm long including limb of 4 mm, pubescent-hirsute outside, glabrous inside. Pistil straight, 20–28 mm long, glabrous; pollen presenter narrowly ovoid, 0.7–0.8 mm long. Old flowers soon falling. Follicles up to 80, narrowly elliptic, 10–18 mm long, 2–7 mm high, 3–7 mm wide; valves semi-circular, smooth, velvety, glabrescent. Seed obovate, 12–18 mm long; seed body oblong to semi-elliptic, 7–11 mm long, 3–7 mm wide, smooth or slightly rugose. 

Occurs in Qld and N.S.W., between Bundaberg and Ulladulla, mostly near the coast, but also on the Blackdown Tableland, Qld. On flats and swamp margins in sandy clay or clay-loam, in open forest, woodland and tall shrubland (Wallum); also on sandstone or granite ridges in open forest. Flowers Mar.–June. Map 181.

Qld: Coolum, S.T.Blake 19213 (BRI); c. 8 km ENE of Tangalooma, Moreton Is., L.Durrington 231 (BRI); c. 8 km NE of Kin Kin, Como State Forest, V.K.Moriarty 122 (BRI). N.S.W.: Coffs Harbour, J.L.Boorman NSW138292 (NSW); c. 3.5 km S of Wattamolla, Royal Natl Park, R.Coveny 2895 (MEL, NSW).

Fire-tolerant, sprouting from the lignotuber. Follicles typically open with fire. Related to B. robur which has much larger leaves, metallic green buds, and flowers with a very short indumentum. Also related to B. plagiocarpa which has longer, coarsely serrate to entire leaves, blue-grey buds and obliquely triangular follicles. Var. minor is not accepted (George, 1996; Thiele & Ladiges, 1996). In cultivation some Qld forms produce multiple flower spikes on lower stems.

(A.S.George)

 

Data derived from Flora of Australia Volumes 16 (1995), 17A (2000) and 17B (1999), products of ABRS, ©Commonwealth of Australia