17 Types of Thorny Bushes and Vines (With Pictures) – Identification
Let's Talk About Parks: Thorny Plants | Pittsburgh Post-Gazette
A thorny problem
Natucate Blog – Buffalo Thorn ⋅ Natucate
Types of Thorn Bushes
Thorns and Spikes Worksheet for kids
Four examples of thorny or hairy plant stems: a rose, barberry, plum and stinging nettle. Coloured etching by F. Sansom, c. 1802, after S. Edwards. | Wellcome Collection