from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of calyptra.


Sorry, no etymologies found.


  • The ground continued frozen but the heat of the sun had a visible effect on vegetation; the sap thawed in the pine-trees and Dr. Richardson informed me that the mosses were beginning to shoot and the calyptrae of some of the jungermanniae already visible.

    The Journey to the Polar Sea


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