attract-prey attracted attraction carnivore carnivorous carnivorous-plants clumps clusters coloring colors colouring colours cover devour digest digested digesting display distinctive edge edges enzymes flora flowers funnel herbaceous insect-trap insects nectar-like-secretions nutrient-source nutrients operculum passive-trap perennials pitcher-plants pitchers pitfall-traps plants prey proteases rims slippery species trap unusual variations variety vegetation veins appearances arid Cacti cactus colorful colourful frilled frills garden-display garden-plants green greenery irregular leaves light ornamental pointed protection ribbed ribbing ribs shape shapes sharp short-spikes small-spines spikes spines spiny succulents sunlight surface surfaces textures anthers Australan Australian-native-flora blooms bright budding buds bush bush-plant cluster colored coloured displayed foliage native nature nectar perennial protected purple purple-tassels Sizes sowerbaea-laxiflora spring stamens strange tufted umbels vanilla-lily Western-Australia wildflowers yellow yellow-anthers barrel barrel-cactus round tall appearance bloom blooming contrast contrasting decorative delicate exotic flower growth hardy sub-tropical temperate texture