animals butterfly flower flowers green insect nature plants wing wings background curry gray grey natural plant stalks stems texture blossom blossoms bright brilliant carpet color colorful colors colour colourful colours crocus crocuses garden gardening glare gleam glow glowing light petal petals purple season shine shiny spring attract-prey attracted attraction carnivore carnivorous carnivorous-plants clumps clusters coloring colouring cover devour digest digested digesting display distinctive edge edges enzymes flora funnel herbaceous insect-trap insects nectar-like-secretions nutrient-source nutrients operculum passive-trap perennials pitcher-plants pitchers pitfall-traps prey proteases rims slippery species trap unusual variations variety vegetation veins