caudex

[kaw-deks]

cau·dex

[kaw-deks]
noun, plural cau·di·ces [-duh-seez] , cau·dex·es. Botany.
1.
the main stem of a tree, especially a palm or tree fern.
2.
the woody or thickened persistent base of an herbaceous perennial.

Origin:
1820–30; < Latin: tree trunk; compare codex
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Caudex is always a great word to know.
So is vascular plants. Does it mean:
group of mostly aquatic eukaryotic organisms which conduct photosynthesis and make their own food
plants with the vascular tissues xylem and phloem for transporting water and nutrients
Collins
World English Dictionary
caudex (ˈkɔːdɛks)
 
n , pl -dices, -dexes
1.  the thickened persistent stem base of some herbaceous perennial plants
2.  the woody stem of palms and tree ferns
 
[C19: from Latin]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
caudex   (kô'děks')  Pronunciation Key 
  1. The thickened, usually underground base of the stem of many perennial herbaceous plants, from which new leaves and flowering stems arise.

  2. The trunk of a palm or tree fern.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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