How old is the very top, down to the first whorl of branches?
The great nebula in Orion was a whorl of shimmering star dust.
Let us suppose a whorl of eight leaves, surmounted by a similar whorl of eight.
The spore-clusters, at the tips of the branches, are surrounded by a whorl of branchlets.
But he saw a glimmer in a whorl of darkness, like a ball of living fire.