macro of a yellow rhinoceros coryphantha cornifera cactus flower

ball bizarre botany cactaceae cacti cactus center closeup collection collector container contradiction contrast cornifera coryphantha dangerous detail fine flower garden gardening harshness hobby horticulture irridescence irridescent macro nature parts patio petals pistil plant pollen radians rare red rhinoceros richerson sarit seaurchin sharp sharpness shimmering showing softness spines ssp stamens succulent thorns ugliness ugly unique unusual vicious yellow