英语词汇“involucre”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

involucre

/ˈɪnvəl(j)uːkə

noun

1 Anatomy A membranous envelope.

2 Botany A whorl or rosette of bracts surrounding an inflorescence (especially a capitulum) or at the base of an umbel.The cupules are simple involucres of bracts which are spirally arranged (according to a Fibonacci pattern) on the floral axis preceding the flower....

Basal leaves and flowers initiate from a tuberous rhizome and three green cauline leaves arranged in a whorl form an involucre around the developing flower.
The Hermaphrodite cyathium shows the characteristics measured (length and width of the cyathium involucre and the nectary).

Origin

Late 16th century: from French, or from Latin involucrum, from involvere 'roll in, envelop' (see involve).

单词	involucre
释义	involucre /ˈɪnvəl(j)uːkə / noun 1 Anatomy A membranous envelope. 2 Botany A whorl or rosette of bracts surrounding an inflorescence (especially a capitulum) or at the base of an umbel.The cupules are simple involucres of bracts which are spirally arranged (according to a Fibonacci pattern) on the floral axis preceding the flower.... Basal leaves and flowers initiate from a tuberous rhizome and three green cauline leaves arranged in a whorl form an involucre around the developing flower. The Hermaphrodite cyathium shows the characteristics measured (length and width of the cyathium involucre and the nectary). Origin Late 16th century: from French, or from Latin involucrum, from involvere 'roll in, envelop' (see involve).
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