calyptra

Lemma

calyptra

Etichetta di dominio

EN

Etichetta grammaticale

n.

Definizione

The protective cap or hood covering the spore case of a moss or related plant. 1

Nota

The calyptra, or cap is the corolla, in which the petals are fused at the apex; it abscises at the base of the flower and pops off at anthesis. Species in Euvitis may have 100+ flowers per cluster, whereas muscadine grapes have only 10-30. Vinifera and Concord grapes are perfect-flowered and self-fruitful, whereas some muscadine cultivars have only pistillate flowers. 2

Contesto

The grape flower does not have conspicuous petals; instead, the petals are fused into a green structure termed the calyptra but commonly referred to as a cap. 3

Trascrizione fonetica

[kəlip'trə] 4

Sinonimi e Antonimi

Cap 5

Abbreviazioni
ND
Etimologia

New Latin, from Greek kalyptra 'veil', from kalyptein 'to cover'. 6

Etichetta di paese
ND
Ente

Università degli Studi di Genova, Facoltà di Lingue e Letterature Straniere

Data della scheda
Fri Jul 20 00:00:00 2007
Autore

Margherita Sanguineti, rev. Cristina Scanu, Gerbau

Fonti

1 : «http://www.thefreedictionary.com/calyptra», (13/10/2011)

2 : «http://www.uga.edu/fruit/grape.html», (06/04/2007)

3 : «http://www.extension.org/pages/31097/parts-of-the-grape-vine:-flowers-and-fruit», (06/04/2007)

4 : «http://www.merriam-webster.com/dictionary/calyptra», (03/07/2009)

5 : «http://winegrapes.tamu.edu/grow/physiology.pdf», (06/04/2007)

6 : «http://www.merriam-webster.com/dictionary/calyptra», (03/07/2009)

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