ca·lyp·tra /kəˈlɪptrə/
帽狀體
Ca·lyp·tra n. Bot. A little hood or veil, resembling an extinguisher in form and position, covering each of the small flasklike capsules which contain the spores of mosses; also, any similar covering body.
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calyptra
n : the hood or cap covering the calyx of certain plants: e.g.,
the California poppy