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Flora of Australia Online

Grevillea microstegia Molyneux, Muelleria 3: 141 (1975)

T: Mt Cassel, Grampians, 14.5 km WNW of Moyston, Vic., 27 Sept. 1970, W.M.Molyneux et al. ; holo: MEL ('Isotypes' cited in protologue are paratypes).

Illustrations: W.M.Molyneux, Muelleria 3: 143–144, fig. 1a–f (1975); W.R.Elliot & D.L.Jones, Encycl. Austral. Pl. 5: 79 (1990); P.M.Olde & N.R.Marriott, Grevillea Book 3: 26 (bottom right), 27 (16A, B) (1995).

Regenerates from seed.

Straggling shrub 0.3–1.0 m high, 2–4 m across. Leaves oblong-ovate in gross outline, 2–6 cm long, 15–50 mm wide, deeply and regularly pinnatipartite with 5–13 primary lobes each entire to 5-fid or -dentate, occasionally a few tertiary teeth or lobes; ultimate lobes rather divaricate, triangular to subulate, 2–25 mm long, 0.5–2 mm wide, usually pungent; margins recurved; lower surface usually with a loose indumentum of ascending to erect wavy to curly hairs concentrated about midvein. Unit conflorescence erect (sometimes on pendent peduncles) or decurved, secund; floral rachis 35–50 mm long. Flower colour: perianth reddish brown; style red with yellow tip. Perianth tomentose to subsericeous outside. Pistil 13.5–15.5 mm long; ovary stipitate; style glabrous. Follicle 9.5–11.5 mm long, subsericeous to subvillous. 

Occurs in western Vic., restricted to the Mt Cassel area of Mt William Ra. in the Grampians mountains. Grows in mixed sclerophyll scrub or woodland in sandy soils over sandstone. Flowers c. Nov.–Dec. Map 20.

Vic.: Grampians [grid] J10, Van Every's Rd, [4 km] SSE of Pomonal, A.C.Beauglehole 25062 (MEL, NSW); Mt Cassel, Mt William Ra., 11 km SE of Halls Gap, H.Streimann 3262 (A n.v. , AD, BRI, CANB, L n.v. , NSW, US n.v. ).

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

Grevillea microstegia is distinguished from G. aquifolium by having more deeply divided leaves, sometimes with tertiary lobing, and a sparser indumentum on the leaf lower surface; and from G. floripendula by having stouter and tomentose peduncles. For distinctions from G. montis-cole and G. dryophylla , see under those species.

(R.O.Makinson)

 

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