calyptra


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ca·lyp·tra

 (kə-lĭp′trə)
n.
1. The protective cap or hood covering the spore case of a moss or related plant.
2. A similar hoodlike or caplike structure, such as a root cap.

[Medieval Latin, from Greek kaluptra, veil, from kaluptein, to cover; see kel- in Indo-European roots.]

ca·lyp′trate′ (-trāt′) adj.

calyptra

(kəˈlɪptrə)
n
1. (Botany) a membranous hood covering the spore-bearing capsule of mosses and liverworts
2. (Botany) any hoodlike structure, such as a root cap
[C18: from New Latin, from Greek kaluptra hood, from kaluptein to cover]
calyptrate adj

ca•lyp•tra

(kəˈlɪp trə)

n., pl. -tras.
1. a hood or hoodlike part, as the lid of the capsule in mosses.
2. a root cap.
[1745–55; < New Latin < Greek kalýptra veil, covering]
ca•lyp′trate (-treɪt) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.calyptra - the hood or cap covering the calyx of certain plants: e.g., the California poppycalyptra - the hood or cap covering the calyx of certain plants: e.g., the California poppy
plant part, plant structure - any part of a plant or fungus
References in periodicals archive ?
Capsule shows a long beaked lid with smooth calyptra.
and E-class MADS-Box homologues in Eupoma-tia (Eupomatiaceae): support for the bracteate origin of the calyptra.
Cross walls are not distinct; the terminal cell is round and without calyptra.