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Flora of Australia Online

Banksia verticillata R.Br., Trans. Linn. Soc. London 10: 207 (1810)
Granite Banksia

Sirmuellera verticillata (R.Br.) Kuntze, Revis. Gen. Pl. 2: 582 (1891). T: King George Sound, [W.A.], Dec. 1801, R.Brown ; lecto: BM, fide A.S.George, Nuytsia 3: 411 (1981); isolecto: BM, K, NSW.

Illustrations: C.E.Rosser & A.S.George, Banksias I: pl. 14 (1981); A.S.George, Banksia Book 194, 195, fig. 56, pl. 82 (1984).

Shrub, rarely a tree, to 5 m tall, much-branched and spreading, without lignotuber. Bark roughly fissured, grey. Stems pubescent, glabrescent. Leaves whorled, sometimes alternate; petiole 5–11 mm long; lamina leathery, elliptic, 3–9 cm long, 7–12 mm wide, obtuse; margins recurved, entire; upper surface loosely hirsute, glabrescent; lower surface white-matted. Inflorescence 8–20 cm long; involucral bracts narrow, hirsute, persistent. Flowers golden; styles yellow. Perianth 25–30 mm long including limb of 3.5–4 mm, pubescent outside, also inside along upper margins. Pistil hooked, 30–35 mm long, glabrous; pollen presenter ovoid, 0.5 mm long. Old flowers persistent but finally falling. Follicles up to c. 100, elliptic, 11–15 mm long, 2–3 mm high, 3–4 mm wide, smooth, tomentose. Seed obovate-cuneate, 18–20 mm long; seed body narrowly cuneate, 10–11 mm long, smooth, with inner face slightly rugose. 

Occurs near the south coast of W.A. at Walpole and from Albany to Two Peoples Bay. On or beside granite outcrops, usually exposed, sometimes in tall shrubland. Flowers Jan.–Apr. Map 240.

W.A.: c. 2 km WNW of Cheyne Beach, S.D.Hopper 1184 (PERTH); Mermaid Point, E of Albany, 7 Mar. 1979, B.Wells (PERTH); Woolbale Rock, NW of Walpole, 6 Jan. 1980, T.G.Wilson (PERTH).

Listed as 'Vulnerable' in the ANZECC Threatened Flora List 1997.

Probably killed by fire and regenerates from seed. Follicles mostly opening without fire after several years. Related to B. littoralis which is usually a tree with longer, serrate adult leaves, the perianth more hirsute inside but the limb appressed-pubescent, and the follicles more exserted from a narrower axis. Banksia littoralis grows in damper habitats and flowers later than B. verticillata . Also closely related to B. seminuda , a tree with thin, usually serrate leaves, strongly recurved styles and perianths with glabrous limb; it flowers in winter.



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