appearance blooming blooms bouquet bunch Carnation carnations color colored colors colour coloured colours cultivar Dianthus dianthus-caryophyllus distinctive flower flowers fragrant garden-plant gift heavenly-flower herbaceous love nature peace perennial plant plants scent scented symbol symbolic symbolism attract-prey attracted attraction carnivore carnivorous carnivorous-plants clumps clusters coloring colouring cover devour digest digested digesting display edge edges enzymes flora funnel 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