Generalized Anatomy of a Cactus | FWS.gov

This generalized anatomy of a cactus with text and magnify glasses. Text from clockwise starting at the right says spines- modified leaves- not thorns; stems- waxy and thick gives shape; roots- primary roots anchors plants; secondary roots spread wide; areoles- flowers, spines and branches sprout here; flowers- showy to attract pollinators like bees, bats and moths

Photo By/Credit

Sandra Gladish/USFWS

Date Shot/Created

01/07/2026

Media Usage Rights/License

Public Domain

Image

This generalized anatomy of a cactus showcases the unique features that help the plant survive in arid environments.

Ecosystem

Desert

Subject tags

Deciduous trees

Plants