Helianthus sunflower seeds close up

Helianthus sunflower seeds close up

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Caption: Helianthus sunflower, close-up of central disc. The inward spiralling pattern of the disc florets are an example of a pattern based on the Fibonacci number series. This is a mathematical pattern that is common in nature and is named after the Italian mathematician Leonardo Fibonacci.

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Keywords: angiosperm, angiosperms, asteraceae, biological, biology, botanical, botany, britain, british, close-up, compositae, detail, disc, disc floret, disk, europe, european, fibonacci numbers, fibonacci series, flora, florets, flower, flowerhead, flowering plants, helianthus annuus, mathematical, mathematics, nature, pattern, patterns, plant, ray floret, sequence, sunflower, uk, united kingdom

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