English Dictionary

calyptra

名詞

(botany) In bryophytes, a thin, hood of tissue that forms from the archegonium and covers the developing sporophyte and is shed as it ripens.

日本語の意味

コケ植物（ブリオフィート類）において、原葉器から形成され、発達中の胞子体を覆う薄いフード状の組織で、成熟に伴い剥がれ落ちる部分。

The calyptra protected the young sporophyte until it was shed as the capsule matured.

包膜は若い胞子体を保護し、胞嚢が成熟すると脱落した。

意味（1）

(botany) In bryophytes, a thin, hood of tissue that forms from the archegonium and covers the developing sporophyte and is shed as it ripens.

(b) sporophyte with foot reduced, the entire sporophyte enveloped by the calyptra, which is ± stipitate at the base.

意味（2）

(botany) any cap-like covering of a flower or fruit, such as the operculum over the unopened buds of Eucalyptus flowers

意味（3）

(botany) Any of various coverings at the tips of structures, in the terminology of various authors; for example rootcaps and the apical cells of trichomes.

意味（4）

(entomology) In flies such as the housefly, Musca, in the taxonomic order Diptera, zoological section Schizophora, subsection Calyptrata, the calyptra is a membranous rearward extension of the forewing; it covers the haltere.

calyptras （ plural ）

calyptrae （ plural ）