Any of several pale or white flowers that bloom at night or have a ghostly, ethereal appearance.
From 'ghost' (pale appearance) + 'flower.' Applied descriptively to plants like certain evening-primrose species and other pale-blooming flowers.
Plants called 'ghostflower' often bloom at night to attract nocturnal pollinators like moths—they evolved white petals specifically because white is most visible to insects in darkness, while bright colors disappear in low light.
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