It grows to between 1 and 3 metres in height and produces flowers between August and December (late winter to early summer) in its native range. The infloresences are cream or yellow terminal racemes. The leaves are 1 to 12 cm long and 1 to 9 mm wide.
The species was first formally described by Carl Meissner in Prodromus Systematis Naturalis Regni Vegetabilis in 1856, from material collected by James Drummond. Two subspecies are currently recognised: subsp. didymobotrya and subsp. involuta.
- "Grevillea didymobotrya". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 2008-10-05.
- "Grevillea didymobotrya ". FloraBase. Western Australian Government Department of Parks and Wildlife.
- "Grevillea didymobotrya". Flora of Australia Online. Department of the Environment and Heritage, Australian Government.
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