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Flora of Australia Online

Grevillea fastigiata Olde & Marriott, Grevillea Book 1: 186 (1994)

T: 20.8 km E of Ravensthorpe, W.A., 12 Oct. 1991, P.M.Olde 91/305 ; holo: NSW.

Grevillea tetragonoloba 'race e', 'short-lobed race', of D.J.McGillivray & R.O.Makinson, Grevillea 71 (1993). 

Illustrations: P.M.Olde & N.R.Marriott, Grevillea Book 2: 162 (top left & 132) (1995).

Regenerates from seed.

Erect shrub 2–2.5 m tall, with fastigiate (clustered) branches. Leaves 1.8–4.5 cm long, sometimes linear, otherwise 3–7-partite with rigid linear lobes clustered at apex of leaf rachis; lobes 5–20 mm long, 0.8–1.2 mm wide, rectangular in cross-section, pungent; margins angularly twice refracted, enclosing lower surface except for midveins. Unit conflorescence erect, secund; floral rachis 45–80 mm long. Flower colour: perianth pale brown to rusty brown; style orange-red to scarlet throughout. Perianth tomentose-villous outside, especially villous on limb. Pistil 19–22 mm long; ovary sessile or subsessile; style with a sparse indumentum of minute curled or erect hairs on ventral side. Follicle c. 10 mm long, initially subsericeous with biramous hairs but near maturity these falling and being replaced with a pubescent indumentum of erect simple glandular hairs. 

Occurs in south-western W.A., where it is apparently restricted to the upper Jerdacuttup R. catchment E of Ravensthorpe. Grows in mallee heath or tall shrubland in granitic loam soil. Flowers Sept.–Mar. Map 36.

W.A.: Jerdacuttup R., C.A.Gardner 13760 (PERTH); Phillips R., A.J.Cough 26 (PERTH); Ravensthorpe road, 9 Oct. 1952, N.H.Speck s.n. (CANB).

Very closely related to G. rigida , which has the floral rachis white-villous (rusty-villous in G. fastigiata ), and the fructual indumentum mainly of biramous hairs; also close to G. tetragonoloba q.v. , and G. wittweri which has smoothly revolute leaf margins and usually secondary leaf division. Grevillea fastigiata also has leaf venation evident above; pedicels c. 1.5 mm long; and floral bracts ovate to broadly obovate, 2–2.5 mm long.

(R.O.Makinson)

 

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