close-up of cactus stem

agriculture angiosperms areoles botany branch buds cactaceae cacti cactus caryophyllales close closeup cochenillifera desert eudicots flat flora floral flower flowers food fresh fruit garden glochids green herbaceous leaf leaves macro natural nature nopal nopales nostle opuntia opuntioideae pad paddle pear perennial pink plant plantae prickly sabra shrub stem stems succulent surface tree trichomes tuna young