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Flora of Australia Online

Banksia grossa A.S.George, Nuytsia 3: 426 (1981)

T: 76 km N of Regans Ford, W.A., 14 May 1969, A.S.George 9316 ; holo: PERTH; iso: CANB, K, NSW.

Illustrations: A.S.George, Banksia Book 206, 207, fig. 61, pl. 89 (1984); C.E.Rosser & A.S.George, Banksias III: pl. 71 (in press).

Shrub to 1 m tall, with lignotuber. Bark flaky, pale brown. Stems tomentose. Leaves: petiole 3–5 mm long; lamina linear, 4–12 cm long, commonly 1.8–2.8 mm wide, obtuse; upper surface pubescent, glabrescent. Inflorescence 5–7 cm long; involucral bracts tomentose, persistent. Flowers rusty brown to golden brown; styles where exposed dark red to purple. Perianth 34–45 mm long including limb of 5–6 mm, hirsute outside and inside. Pistil hooked, 38–48 mm long, glabrous; pollen presenter ovoid, 1 mm long. Old flowers persistent, curled against follicles. Follicles elliptic, usually 25–35 mm long, 10–18 mm high, 10–18 mm wide, smooth, very hirsute. Seed unevenly obovate, 28–39 mm long; seed body narrowly cuneate, 14–18 mm long, 4–9 mm wide, smooth. Fig. 35H, I.

Occurs from just north of Eneabba almost to Regans Ford and inland towards Coorow, W.A. In shallow white or grey sand over laterite, in kwongan; sometimes in deep sand. Flowers Mar.–Sept. Map 251.

W.A.: NE of Mt Lesueur, A.S.George 14429 (PERTH); 8 km S of Eneabba, R.J.Hnatiuk 770025 (PERTH); Cadda Rd., 30 May 1965, F.W.Humphreys (PERTH).

Fire-tolerant, sprouting from the lignotuber; follicles usually opening with fire. Inflorescence commonly on short lateral branch towards base of main stem. Related to B. sphaerocarpa which has finer leaves and flowers and smaller, loosely hirsute or glabrous follicles with a ridge across each valve.

(A.S.George)

 

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