a cactus with a yellow flower in the botanical collection, odessa, ukraine

cactus botanical collection odessa ukraine cacti succulent succulents bloom blooming flower yellow yellowflower desert garden nature plant flora botany exotic arid dry macro closeup spines thorny prickly vibrant colorful bloomseason floweringcactus exoticplant rare greenhouse ornamental desertplant blossom blossoms beauty succulentplant desertflower species gardening wild exoticflower