Glossary Details – Lecythidaceae

Glossary Details:

Thorns of Uncaria guianensis. Photo by S. A. Mori.

Title: Thorns arising from the stem of a plant. Drawing by B. Angell.

Description: Thorns arising from leaf axils along the stem of a plant. Thorns are modified branches. In this example, lateral branches are arising in the axil between the thorn and and the main stem.

Term:

Thorn

Definition:

A sharp-pointed, aborted branch that is woody and has vascular tissue.

Notes:

Thorns can be branchd or unbranche.d.

Related Terms:

Prickle
Prickle
Spine