Cryptophyte may refer to:
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a plant which survives the unfavorable season underground or underwater in the RaunkiƦr plant life-form classification
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cryptomonad, or cryptophyte, a single-celled organism of the superclass Cryptomonada, most of which are photosynthetic
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Cryptophyceae, a class of cryptomonads
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fossil plants that produced the cryptospores