Caudex

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Caudex of Jatropha catharica
Caudex of Jatropha catharica

A caudex (plural: caudices) is a form of stem morphology appearing as a persistent, spheroid enlargement (frequently woody, and non-photosynthetic) of the root crown or stem axis of an otherwise herbaceous stem. Caudices may extend below ground. This structure commonly appears in (but is not limited to) plants adapted to xeric environments, and functions as a water storage organ. Some trees, such as Eucalyptus camaldulensis, also have a caudex, as an adaptation to ecosystems where periodic (natural) fires are common.

Caudiciform describes plants having a caudex. Some notable caudiciformic genera: Adenia (family Passifloraceae), Beaucarnea (family Ruscaceae), Jatropha (family Euphorbiaceae) and Pachyrhizus (family Fabaceae).

[edit] Etymology

Latin caudex, n.; tree trunk.

[edit] References

  • L. H. Bailey Hortorium/Cornell University; (1976) Hortus Third; New York; Macmillian Publishing Company ISBN 0025054708
  • J. Ríha & R. Subík; (1981) The Illustrated Encyclopedia of Cacti and Other Succulents; Secaucus; Chartwell Books ISBN 1555218784

[edit] External links

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