Flora of Australia Online
Grevillea patulifolia Gand., Bull. Soc. Bot. France 66: 231 (1919)
T: Barbers Ck, N.S.W., Nov. 1899, 'J.H.Maiden ' [probably H.J.Rumsey ]; holo: LY; ?iso: NSW (Barbers Ck, Nov. 1899, H.J.Rumsey ).
Grevillea linearifolia Southern Sandstone form, of R.O.Makinson, in G.J.Harden (ed.), Fl. New South Wales 2: 52 (1991).
Grevillea linearifolia 'form f - southern sandstone form', of D.J.McGillivray & R.O.Makinson, Grevillea 344–345 (1993).
[Grevillea parviflora auct. non R.Br.: A.Fairley & P.Moore, Nat. Pl. Sydney District 169 (1989)]
Illustrations: A.Fairley & P.Moore, Native Pl. Sydney District 169 (1989), as Grevillea parviflora ; R.O.Makinson, in G.J.Harden (ed.), Fl. New South Wales 2: 52, fig. adj. 39d (1991), as Grevillea linearifolia Southern Sandstone form; P.M.Olde & N.R.Marriott, Grevillea Book 3: 83 (top centre & 61) (1995).
Regenerates from seed and (most populations?) basal suckers and/or rhizomes. Probably insect-pollinated.
Erect or rarely low spreading shrub (0.2–) 0.8–2.0 m tall. Branchlets angular, subsericeous between ridges. Leaves sublinear to narrowly elliptic or slightly oblanceolate, (0.8–) 2–5 (–7) cm long, 1–3 mm wide (juveniles to 7 mm), straight, usually rigid, pungent, sometimes in clusters of 3; upper surface punctate with veins prominent and granulose to scabrid; margins refracted, usually at more than 90º to plane of upper surface; lower surface exposed and subsericeous or mostly enclosed and 2-grooved. Conflorescence terminal, often aggregated, erect to decurved, sessile to shortly pedunculate, regular and umbelloid or occasionally subsecund, scarcely exceeding adjacent leaves, usually many-flowered. Flowers adaxially oriented to acroscopic. Flower colour: perianth pale pink to dark mauve-pink or rarely white; style similar. Perianth subsericeous outside, bearded inside. Pistil (6.5–) 8–8.5 (–10.5) mm long; style gently curved with a sharp hook in the apical 2 mm, minutely hairy or papillose in apical 1 mm; pollen-presenter oblique. Follicle narrowly ellipsoid, c. 11 mm long, faintly warty. Fig. 22G–H.
Occurs in N.S.W. and Vic. In N.S.W., from southern outskirts of Sydney (Heathcote, Yerrinbool) NW to Kanimbla Valley and Sunny Corner, S to Tabourie and Braidwood areas and inland nearly to Marulan, then disjunct in Vic. where restricted to far eastern Gippsland (Mallacoota area), with one doubtful record from Bemm R. Doubtfully naturalised in the Canberra area. Grows usually in moist heath or woodland/heath associations in sandy soils. Flowers July–Feb. Map 215.
N.S.W.: Heathcote Ck, J.G.McKern NSW94107 (NSW); Flat Rock Ck to Yalwal Ck, [W of] Nowra, M.McMillan 72/216 (CANB); 3.2 km S Fitzroy Falls, K.Mowle 71 (CANB, NSW). Vic.: N of Howe Ck, E of Mallacoota Inlet, A.C.Beauglehole 34381 (MEL, NSW); SE sector of Mallacoota Inlet Natl Park, 4 Nov. 1969, J.H.Willis s.n. (MEL, NSW).
The leaves of G. patulifolia are often spreading to widely ascending, rigid, and pungent, as compared with most similar species. Leaves are usually 1–5 cm long, with a rare riparian variant with strongly ascending linear leaves 5–7 cm long known from the Endrick R. near Nerriga. A rare form, apparently assignable to this species, with strongly scabrid leaf veins is known from a few collections from the Kanimbla Valley and Sunny Corner area; elsewhere the veins are obscurely granulose. Over much of the range the habit is a low shrub to 60 cm tall; in the Heathcote area (N.S.W.) it forms an erect shrub to 2 m tall, often with subsecund inflorescences (regular-umbelloid elsewhere).
A tiny, probably uniclonal, white-flowered population occurs in disturbed bushland on the southern footslopes of Mt Ainslie, A.C.T. While natural origin cannot be ruled out, it is likely that this is introduced; other Grevillea species and cultivars have naturalised in the same area apparently from plantings in the 1920–1940 period.
Grevillea patulifolia can be confused with some variants of G. linearifolia and G. parviflora subsp. parviflora (which have pliable non-pungent leaves and consistently secund to subsecund unit conflorescences), and with G. neurophylla (which has often longer and narrower, pliable, non-pungent, more strongly ascending leaves and shorter pedicels 4.5–5 mm long, and a usually shorter pistil 6–7.5 mm long). There are some indications of an intergrade between G. patulifolia and G. linearifolia in the Nowra/Conjola area.
Data derived from Flora of Australia Volumes 16 (1995), 17A (2000) and 17B (1999), products of ABRS, ©Commonwealth of Australia