Following on from @rightph photographs of a banksia flower( I will copy here for ease of reference)
You might be interested in what happens after flowering.
When the flower dies and the petals fall it leaves a cigar shaped fury rod the length of the flower.
This is a closer look a bit out of focus
Following this the cigar thingie grows a seed pod, again the length of the flower.
The seeds have been evacuated in this photo. Seed pod is hard and woody. If you slice it length ways you get this.
If you slice along the axis you get this
I have made many drink coaster slicing axially.
Leads to artistic people making key holders like this. No I did not make this, my Mother did.
I find Banksia's fascinating.