Term:
Retrorse
Retrorse
Definition:
Directed downward or backward. Opposite of antrorse.
Directed downward or backward. Opposite of antrorse.
Glossary Details:
Title: Stem of Uncaria guianensis. Photo by S. A. Mori.
Description: Stem of Uncaria guianensis based on Mori et al. 24735 from Saül, French Guiana. Note the reflexed thorns and the reflexed stipule.Thorns are modified branches. In this species the thorns are curved proximally, i.e., backward.