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Flora of Australia Online

Grevillea acerata McGill., New Names Grevillea 1 (1986)

T: Gibraltar Range Natl Park, 58 miles [93 km] NW of Grafton on the Gwydir Hwy, N.S.W., 8 Feb. 1973, M.D.Tindale 2069 ; holo: NSW; iso: K, NE.

[Grevillea sphacelata auct. non R.Br.: N.C.W.Beadle, Stud. Fl. NE New South Wales 2: 244, 245, fig. 114D (1973)] 

Illustrations: N.C.W.Beadle, Stud. Fl. NE New South Wales 2: 244, 245, fig. 114D (1973), as Grevillea sphacelata ; W.R.Elliot & D.L.Jones, Encycl. Austral. Pl. 5: 17 (1990); P.M.Olde & N.R.Marriott, Grevillea Book 2: 11 (centre left & 5A–C) (1995).

Regenerates from seed.

Shrub 0.6–1.5 m high. Leaves linear to very narrow-elliptic or slightly -obovate, 1–3 cm long, 1.0–1.5 (–2.0) mm wide; margins revolute; upper surface sparsely hairy, soon glabrous and granulate; lower surface mostly enclosed, subsericeous to subvillous. Unit conflorescence umbelloid-subglobose, basipetal. Flowers adaxially acroscopic. Flower colour: perianth with brownish hairs outside especially on limb; inner surface with white to grey indumentum tinged pink by ground tissue; style with white to grey hairs over purplish pink ground tissue. Perianth subvillous outside and inside, often persistent in fruit. Pistil 9–12 mm long, villous; style-end lacking apical appendage; pollen-presenter very oblique to lateral, obovate, flat to slightly convex. Follicle obliquely ovoid, 12 mm long, loosely villous, rugulose. 

Occurs in N.S.W. in the Northern Tablelands area E of Glen Innes, known only from Gibraltar Range Natl Park and from nearby Pheasant Ck, Glen Elgin. Grows in sclerophyll woodland, open forest and heath, in granitic soils. Flowers mainly Sept.–Dec., sporadic in other months. Map 315.

N.S.W.: Pheasant Ck, Glen Elgin, Dec. 1913, J.L.Boorman NSW93434 (CANB, K, NSW); 1.2 km from Milligans [Mulligans] Hut on road to Gwydir Hwy, Gibraltar Range Natl Park, W.E.Fisher 245 (NSW, PERTH); Gibraltar Ra., NE of Glen Innes, R.W.Jessup & M.Gray 3061 (CANB, NSW); Wades Rd, Gibraltar Range Natl Park, N.S.Lander 523 (NSW); Gibraltar Range Natl Park, Little Dandahra Ck, near Mulligans Hut picnic area, R.O.Makinson 1446 et al. (AD, BRI, CANB, K, MEL, NSW).

This species is recognised as 'Rare' in J.D.Briggs & J.H.Leigh, Rare or Threatened Australian Plants (1995).

Among eastern Australian relatives G. acerata is most likely to be confused with G. sphacelata , which has consistently subsericeous branchlets and lower leaf surfaces, usually narrowly obovate-elliptic to oblong-elliptic leaves with the lower surface usually exposed, abaxially oriented flowers, the style-end often slightly horned or apiculate, and the pollen-presenter distinctly rimmed (unrimmed in G. acerata ). Grevillea occidentalis from W.A. is very similar; see under that species for differences.

(R.O.Makinson)

 

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