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Flora of Australia Online

Grevillea pachylostyla (McGill.) Olde & Marriott, Grevillea Book 1: 186 (1994)

Grevillea willisii subsp. pachylostyla McGill., New Names Grevillea 16 (1986). T: Reedy R. Gorge, Nunniong Plateau area, Vic., 13 Nov. 1964, J.H.Willis ; holo: MEL.

Illustrations: P.M.Olde & N.R.Marriott, Grevillea Book 3: 71 (top left & 51A, B) (1995).

Probably regenerates from seed only.

Sprawling or mounded to spreading shrub to 1.5 m tall. Leaves bipinnatifid, 2–4 cm long, 20–30 mm wide, with 5–11 usually 2- or 3-fid primary lobes; ultimate lobes triangular or narrowly so, 5–12 mm long, 2–3 mm wide, pungent; margins refracted; lower surface woolly-pubescent with tightly curled hairs. Unit conflorescence decurved to pendulous or sometimes erect, conico-cylindrical to weakly secund; floral rachis 30–50 mm long. Flower colour: perianth cream on curve and limb, black below and inside; style cream rapidly becoming pink to red after anthesis. Perianth sericeous outside. Pistil 16–18.5 mm long; ovary sessile or subsessile; style glabrous. Follicle c. 12 mm long. 

Occurs in eastern Vic., on the upper Buchan R. and its tributaries, possibly once extending to Buchan. Grows in rocky situations near streams on granite. Flowers Oct.–Feb. Map 14.

Vic.: upper Buchan R., NW of West Tree, via Buchan, 11 Feb. 1950, L.Hodge (MEL); in old bed of a river at Buchan, 15 Dec. 1919, M.McRae (MEL); Reedy R. valley below Brumby Point, Nunniong Plateau area, 13 Nov. 1964, J.H.Willis (MEL 501463).

Grevillea pachylostyla is similar to and a sister-species of G. willisii. For differences see notes under the latter species. Collections possibly intermediate between the two species are known from Mt Stradbroke and Boundary Ck near Gelantipy.

(R.O.Makinson)

 

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