The flowers (in the center) are individually small, inconspicuous, and hermaphroditic, with four, greenish-yellow petals (not bracts) 4 mm (0.16 in) long. Around 20 flowers are produced in a dense, rounded, umbel-shaped inflorescence, 1–2 cm (0.39–0.79 in) in diameter. This central flower head is surrounded by four conspicuous large white, pink or red bracts (not petals).
en.wikipedia.org/wiki/Cornus_florida
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