Maybe Grevillea ramosissima - but leaves more narrow than usual
Sparsely branched shrub 50cm high
Volunteer plant growing on a rocky cutting face on the highway in the Brogo Pass. There are several large mature trees, planted in the 1990s when there was a bit of a fad for Paulownia, on a property about 1/2 km north.
I really can't see any difference between this species and W. planiflora other than size, and even with that there appears to be overlap. However, these flowers just looked small in situ, so I have gone with multicaulis, which is the smaller of the two.
Scattered patches of it all over Sara Oval