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Flora of Australia Online

Banksia attenuata R.Br., Trans. Linn. Soc. London 10: 209 (1810)
Slender Banksia

Sirmuellera attenuata (R.Br.) Kuntze, Revis. Gen. Pl. 2: 582 (1891). T: King George Sound, [W.A.], Dec. 1801, R.Brown ; holo: BM.

Banksia cylindrostachya Lindl., Sketch Veg. Swan R. xxxiv (1840). T: Swan R. colony, [W.A.], late 1830s, J.Drummond s.n. ; lecto: CGE, fide A.S.George, Nuytsia 3: 350 (1981).

Illustrations: C.E.Rosser & A.S.George, Banksias I: pl. 12 (1981); A.S.George, Banksia Book 133–135, fig. 31, pl. 51 (1984).

Shrub to 2 m or tree to 10 m tall, with lignotuber or fire-tolerant trunk. Bark thick, verrucose, friable, pale grey-orange. Stems pubescent. Leaves narrowed to petiole up to 1 cm long; lamina linear, 4–27 cm long, 5–16 mm wide, truncate; margins slightly recurved, obtusely and shortly serrate; upper surface hirsute, glabrescent; lower surface tomentose. Inflorescence terminal, 5–26 cm long; involucral bracts hirsute, viscid, persistent. Flowers bright yellow including styles. Perianth 15–22 mm long including limb of 3–4.5 mm, glabrous. Pistil gently curved, 15–22 mm long, glabrous; pollen presenter narrow, 1 mm long, smooth. Old flowers persistent, with styles curled against axis. Follicles broadly elliptic, 20–35 mm long, 10–15 mm high, 14–20 mm wide, smooth, densely hirsute, often darkly mottled. Seed obovate, 22–26 mm long; seed body cuneate, 12–14 mm long, 13–14 mm wide, smooth inside, rugose outside. 

Widespread in south-western W.A. from Kalbarri to Cape Leeuwin and east to the Fitzgerald R., extending inland to Wongan Hills and Lake Grace. Grows in deep sand, sometimes over limestone or laterite, in kwongan, shrubland and woodland. Flowers mainly Oct.–Feb. Map 217.

W.A.: Spalding Park, N of Geraldton, A.C.Burns 22 (PERTH); 24 km W of Bremer Bay, R.B.Filson 9123 (MEL, PERTH); 47 km E of Dumbleyung, A.S.George 15266 (PERTH); L. Joondalup, J.Havel 333 (PERTH); Cape Naturaliste, Oct. 1909, J.H.Maiden NSW119893 (NSW).

Related to B. lindleyana , a shrubby plant with flat, shortly dentate leaves, much larger flowers and smaller follicles, the old styles stiff and spreading. Fire-tolerant, sprouting from the branches, trunk and lignotuber. Follicles opening with or without fire; splitting from stylar point.

(A.S.George)

 

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