What is this close-up picture? (WotsThat: Fern frond unfurling)

Question

What object is shown in this zoomed-in close-up photo?

IchorDrop · Accepted Answer

Fern frond unfurling. Fern fronds unfurl in a spiral pattern called a crozier, which protects the delicate new leaves as they emerge. This ancient plant reproductive strategy hasn't changed much in over 300 million years.

Answer: Fern frond unfurling

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