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Flora of Australia Online

Grevillea irrasa Makinson, Fl. Australia 17A: 503 (2000)

T: Nullica State Forest, Yowaka R. catchment, Mine Rd, 500 m uphill along side track from pyrophyllite mine entrance, N.S.W., 23 Nov. 1997, R.O.Makinson 1649, W.Molyneux, S.Forrester & B.J.Harrison ; holo: CANB; iso: AD, BRI, HO, K, MEL, NE, NSW.

Grevillea victoriae 'race l', of D.J.McGillivray & R.O.Makinson, Grevillea 321 (1993). 

Grevillea sp. aff. miqueliana , of P.M.Olde & N.R.Marriott, Grevillea Book 3: 32 (1995). 

Erect spreading shrub 1.5–3 m tall. Branchlets subterete, tomentose to subvillous. Leaves oblong to obovate or narrowly so or occasionally elliptic, 3–6 (–9) cm long, 5–22 mm wide; upper surface granulose or asperous; margins shortly recurved; lower surface exposed, velutinous or villous. Conflorescence usually terminal, decurved to pendulous, pedunculate (peduncle 10–40 mm long), sometimes branched; unit conflorescence a loose cluster, 6–16-flowered; floral rachis 8–20 (–30) mm long. Flowers acroscopic. Perianth subvillous outside, bearded inside. Pistil 14–17 mm long; style straight to gently curved, sparsely pubescent in apical 2–5 mm; pollen-presenter lateral. Follicle ovoid to ellipsoidal, (?12–) 15–18 mm long, with faint longitudinal ridges. 

Occurs in south-eastern N.S.W., in two separate ranges, separated by an apparent gap of c. 80 km. 

Grevillea irras a is closely related to G. miqueliana , for differences see notes under the latter species. The pinkish new growth and the fine wiry peduncles suggest some relationship also to G. victoriae var. leptoneura .

The two metapopulations are here regarded as subspecies.


Leaves narrowly oblong or narrowly obovate, l:w ratio 5:1 to 10:1; indumentum of the leaf lower surface with all hairs more or less spreading, not obviously 2-layered

subsp. irrasa

Leaves obovate to narrowly so or elliptic or oblong, l:w ratio 5:1 to 7:1; indumentum of the leaf lower surface (×20–30 magnification) with spreading hairs emergent from a denser layer of appressed hairs

subsp. didymochiton


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