Dictionary.com
Thesaurus.com

floral tube

American  

noun

Botany.

  1. a cylinder formed in some flowers by the fusion of the perianth and stamens, as in the daffodil or iris.

floral tube Scientific  

  1. A tube formed by the fusion of parts of the perianth and often the stamens at their bases, as in flowers of the daffodil or morning glory.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.