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Flora of Australia Online

Grevillea pterosperma F.Muell., Trans. Philos. Soc. Victoria 1: 22 (1855)

T: Murray River towards junction with Murrumbidgee River, Vic., Dec. 1854 (error for 1853), F.Mueller ; lecto: MEL, fide D.J.McGillivray & R.O.Makinson, Grevillea 436 (1993); isolecto: MEL; remaining syntypes: Murray, F.Mueller ; syn: K.

Grevillea sericostachya Meisn., in A.L.P.P. de Candolle, Prodr. 14: 384 (1856). T: S.W. Australia, J.Drummond Suppl. 5th Coll. 10 ; holo: NY n.v. ; iso: BM, CGE n.v. , MEL, P n.v. , TCD n.v.

Grevillea simulans A.Morrison, J. Bot. 50: 277 (1912). T: Uaroo and Minderoo, Asburton R. W.A.; holo: not found.

Illustrations: D.J.McGillivray & R.O.Makinson, Grevillea 225, col. pl. (1993); P.M.Olde & N.R.Marriott, Grevillea Book 3: 117 (top left & 89A–C) (1995).

Regenerates from seed only.

Erect shrub 2–4 m high. Leaves ascending, (3–) 6–18 cm long, entire and ±linear and 0.8–2 mm wide, or occasionally 2–6-partite with entire linear lobes 1–1.5 mm wide; upper surface with 3–5 longitudinal ridges; margins ±angularly revolute; lower surface enclosed except for midvein, 2-grooved. Conflorescence erect, usually simple, sometimes few-branched; unit conflorescence dense, cylindrical, 6–8 cm long, basipetal or sometimes subsynchronous. Flowers oriented transversely to rachis. Flower colour: perianth greyish white outside, creamy white inside; style cream to pale yellow. Perianth subsericeous-villous outside, glabrous or with a few hairs at base inside; tepals lax and recurved after anthesis. Pistil 12–21 mm long; ovary stiffly villous; style glabrous or with hairs in basal c. 2 mm only; pollen-presenter oblique. Follicles 15–20 mm long, transverse to oblique on pedicel, thickly lenticular, subvelutinous to tomentose with short biramous hairs often also with simple erect glandular viscid hairs. 

A mostly inland species occurring in all mainland states except Qld; in W.A. south from c. 23ºS from Giles west to the lower Murchison and south to Mt Holland; in the far south-west of N.T.; in S.A. from north of the Nullarbor Plain through the northern Eyre Peninsula and in the south-east from the Murray R. to Bordertown; in N.S.W. in the south-west, extending to north-western Vic. Grows in a variety of habitats in mallee, heath, open woodland and spinifex, in rocky loam to deep sand. Flowers June–Jan. Map 341.

W.A.: 19.3 km N of Wiluna, N.H.Speck 1330 (CANB, MEL, NSW, PERTH). N.T.: George Gill Ra., Wallaby Gorge area, ±1.5 km NE of Reedy Rock Hole, A.C.Beauglehole 26551 (AD, CANB, NSW). S.A.: lake complex S of L. Bring, ±160 km W of Commonwealth Hill Stn HS, D.E.Symon 3412 (AD, CANB, NSW). N.S.W.: 28 km W of Pan Ban HS on Pooncarie Rd, M.Fox 8310389 & H.Fallding (NSW). Vic.: Wyperfeld Natl Park, c. 1.6 km S of Moorong Rise, A.C.Beauglehole 29355 (MEL, NSW).

Similar to G. albiflora which differs in having all or most leaves deeply divided, smaller floral bracts ≤ 2.2 mm long (4–7 (–9) mm in G. pterosperma ), a ±transverse torus (oblique in G. pterosperma ) and the style villous over the basal third. Grevillea eriobotrya has more conspicuously hairy flowers, pistils 10–13 mm long and a less compressed follicle with a subhemispherical seed (seeds highly compressed in G. pterosperma and G. albiflora ).

(R.O.Makinson)

 

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