A touch of blue

I've been puzzling over this Banksia for some months. It grows in the local heathland. I didn't recognise it at first, and waited for it to flower for another try at identification. It's now flowering, and I think it's very likely Banksia oblongifolia, common name Dwarf Banksia. This Wikipedia page mentions that the flowers, in bud stage, often have a blue-grey tinge, sometimes mauve-blue.

The first scientific collection of B. oblongifolia was by the French-born Spanish botanist Louis Nee in 1793 in the Sydney area. The British colony was just 5 years old at that time. Nee was a member of a Spanish expedition led by Allesandro Malaspina, whose two ships, built especially for the expedition, were named Descubierto and Atrevida. Which I read was in homage to Captain Cook whose ships, for his third and final expedition, were the Discovery and Resolution. Malaspina translated those names into Spanish.