The spiny-leaved varieties are valuable for sub-tropical gardening.    From Wordnik.com.  [The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition] Reference

PURPUREA, a spiny-leaved, hard shrub, with numerous crimson leaves123, and the EUPHORBIA.    From Wordnik.com.  [Journal of an Expedition into the Interior of Tropical Australia] Reference

Instead the team members chatted excitedly, gesturing through the port at slick granite walls and the tiers of spiny-leaved trees that climbed the eastern talus slope.    From Wordnik.com.  [Quozl]