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Flora of Australia Online

Grevillea acrobotrya Meisn., Hooker's J. Bot. Kew Gard. Misc. 7: 74 (1855)

T: interior north of Swan River, A. [W.A.], 1850–51, [J. ] Drummond Coll. V. 185 ; lecto: NY n.v. , fide D.J.McGillivray & R.O.Makinson, Grevillea 402 (1993); isolecto: [most as Drummond VI: 185 ] A, B [as Diels 7582 ], CGE, G-DC, K, LD, MEL, P (all n.v. except K, MEL, P).

Grevillea acrobotrya Meisn. subsp. acrobotrya , sensu D.J.McGillivray & R.O.Makinson, Grevillea 183–184 (1993). 

Illustrations: D.J.McGillivray & R.O.Makinson, Grevillea 183 (1993), as Grevillea acrobotrya subsp. acrobotrya ; P.M.Olde & N.R.Marriott, Nuytsia 9: 251, fig. 4A–D (1993); P.M.Olde & N.R.Marriott, Grevillea Book 2: 12 (top centre & 6B), 13 (6C, D) (1995).

Probably regenerates from seed only.

Shrub 0.6–2 m high, with emergent flowering branches. Branchlets (basal, vegetative) subsericeous to tomentose, or (flowering zone) glabrous or rarely tomentose. Leaves 0.6–4 cm long, 10–35 mm wide, dimorphic, on vegetative branches obovate to obtrullate, basally cuneate and apically 5–9-toothed or -fid, on flowering branches much smaller, deeply tripartite with spreading simple narrowly triangular lobes to c. 7 mm long, 1.3 mm wide; apices pungent; margins shortly refracted to recurved; lower surface exposed, sericeous. Unit conflorescence ?basipetal, subglobose to domed-subumbelloid; floral rachis glabrous or rarely tomentose. Flower colour: perianth white to cream with limb chocolate-brown; style white. Perianth glabrous outside. Pistil 3–4 mm long; style scarcely swollen, subcylindrical; pollen-presenter narrowly truncate-conical to fusiform, base slightly wider than apex of style. Follicle obloid-ellipsoidal, 8–11 mm long, smooth or obscurely colliculate. Fig. 38F–I.

Occurs in south-western W.A., between Eneabba and Badgingarra. Grows in open heath associations in sandy soils over laterite. Flowers much of the year, peaking June–Sept. Map 428.

W.A.: between Moore [R.] and Murchison [R.], 1853, Js Drummond [s.n. ] (K); near Jurien Bay, A.R.Fairall 2479 (CANB, KPBG); W of Coomallo Ck, E of Jurien, E.A.Griffin 2706 (PERTH); 0.3 km S of Boothendarra Ck on Brand Hwy, D.J.McGillivray 3285 & A.S.George (NSW, PERTH); on hill crest c. 3.2 km SE of Mt Lesueur, 7 Oct. 1961, J.H.Willis (MEL).

Over most of the range, the flowering branchlets are glabrous and often slightly glaucous, and the floral rachises glabrous. In the southern part of the range (e.g. near Badgingarra) some specimens have densely tomentose flowering branchlets and floral rachises, similar to those of the related G. stenogyne (see under that species for differences). The populational basis of this variation needs assessment; recognition at subspecific level may be warranted.

McGillivray & Makinson (Grevillea 184 (1993)) treated the taxon here recognised as G. uniformis (McGill.) Olde & Marriott, as a subspecies of G. acrobotrya . McGillivray & Makinson (Grevillea 402 (1993)) and Olde & Marriott (Nuytsia 9: 252–254 (1993); Grevillea Book 2: 12 (1995)) regarded the taxon here recognised as G. stenogyne (Benth.) Makinson as a synonym of G. acrobotrya.



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