Noun
genus of nearly globular cacti of Mexico and southwestern United States: barrel cacti
Source: WordNetMorphology Ferocactus species, a cactoid, in its native Arizona habitat The 1,500 to 1,800 species of cacti mostly fall into one of two groups of "core cacti": opuntias (subfamily Opuntioideae ) and "cactoids" (subfamily Cactoideae). Source: Internet