the cactus gymnocalycium denudatum is in bloom. on black background

areola axillas beautiful beauty better bloom blooming blooms blossoms botanic botany bud cactus closeup collection decorativeness delicate design detail equilibrium excellent exclusive flora floriculture flower flowery genetics gorgeous grace green greenhouse growth gymnocalycium home hothouse increasing interior lush mexico nature neat nipples perennial powerful round seedling smooth snapshot sphere spikes spines spiny succulent unusual