Ключевые слова: angiosperms, cactacea, cactea, cactoidea, cactus, cactus blossom, cactus spine, cactus thorn, caryophyllales, core eudicots, eudicots, ferocactus, ferocactus piliferus, magnoliopsida, mexican lime cactus, plant, red cactus blossom, red cactus spine, red cactus thorn, red spine, red thorn, spermatophytes, spermatophytina, spine, thorn, tracheophyta, tracheophytes,