What is "calyptra"

Calyptra \Ca*lyp"tra\ (k[.a]*l[i^]p"tr[.a]), n. [NL., fr. Gr. kaly`ptra a covering for the head, fr. kaly`ptein to cover.] (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.

n. 1 (context botany English) In bryophytes, a thin, hood of tissue that forms from the archegonium and covers the developing sporophyte and is shed as it ripens.Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 2 (context botany English) any cap-like covering of a flower or fruit, such as the ''operculum'' over the unopened buds of ''Eucalyptus'' flowersJackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 3 (context botany English) Any of various coverings at the tips of structures, in the terminology of various authors; for example rootcaps and the apical cells of trichomes.Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 4 (context entomology English) In flies such as the housefly, ''Musca'', in the order Diptera, section Schizophora, subsection Calyptrata, the calyptra is a membranous rearward extension of the forewing; it covers the haltere.C. R, Osten Sacken. Notice on the terms: Tegula, antitegula, squama and alula, as used in Dipterology

n. the hood or cap covering the calyx of certain plants: e.g., the California poppy

Calyptra (from καλύπτρα (kalúptra) "veil") is a scientific term used in botany. It describes a feature in plant morphology.

The genus Calyptra is a group of moths in subfamily Calpinae of the family Erebidae. They are a member of the Calpini tribe, whose precise circumscription is uncertain but which includes a number of other fruit-piercing or eye-frequenting genera currently classified in Calpinae.

Calyptra is a genus of fungi in the class Dothideomycetes. The relationship of this taxon to other taxa within the class is unknown ( incertae sedis).

A calyptra is a feature of plant formation. Calyptra may also refer to:

• Calyptra (moth), a moth genus in the family Noctuidae
• Calyptra (fungus), a genus of fungi in the class Dothideomycetes