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Flora of Australia Online

Grevillea didymobotrya Meisn., in A.L.P.P. de Candolle, Prodr. 14: 386 (1856)

T: 'In colonia Swan River, [W.A.] (Drumm. [J. Drummond ] coll. 4, n. 280! )' [protologue]; holo: NY n.v. ; iso: G, MEL, P, PERTH.

Grevillea didymobotrya Meisn., Hooker's J. Bot. Kew Gard. Misc. 4: 186 (1852), nom. nud.  

Shrub 1–3 (–5?) m tall. Leaves entire, either unifacial (subsp. didymobotrya ) or dorsiventral (subsp. involuta ). Unifacial leaves subterete to linear, 2.5–17 cm long, 0.5–1.3 mm wide; margins obscure; surface with 7–17 longitudinal ridges and appressed hairs in grooves. Dorsiventral leaves narrowly elliptic to obovate (rarely a few sublinear), 1–7 cm long, (1–) 3–7 mm wide; margins incurved to involute, occasionally enclosing upper surface; surfaces somewhat similar; lower surface with 7–11 longitudinal ridges and an open appressed indumentum. Conflorescence terminal and occasionally also axillary, erect, simple or paniculately 2–5-branched, sometimes with a little secondary branching; unit conflorescence cylindrical, 3.5–6 cm long, ±synchronous. Flowers acroscopic. Perianth sericeous outside, glabrous inside. Nectary inconspicuous and arcuate or sometimes absent. Pistil 3–6 mm long, glabrous; pollen-presenter erect to oblique, conical. Follicle mostly semiobcordate (cuneate in side view), often attenuate to style base, 5–8.5 mm long, glabrous, smooth, not viscid. 

Occurs in south-western Australia from Shark Bay to Esperance. 

There are two subspecies.


Leaves unifacial, subterete to linear

subsp. didymobotrya

Leaves dorsiventral, narrowly elliptic to obovate (rarely involute-sublinear)

subsp. involuta


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