"Acanthus" is a synonym for "Acanthaceae"

Acanthaceae is a large family in the class Dicotyledons, including approximately 250 genera and more than 2,500 species of plants. Most Acanthaceae plants grow in tropical areas, mainly herbs and shrubs, and some vines or thorny plants. Only a few species can grow in temperate areas. The most widely distributed areas are South Asia, Indochina, Africa, Brazil and Central Asia. America, distributed in various ecological environments.