anemone capture cnidocyte coruna defense disk flower ocean oral pedal poison polyp portiño predatory prey rock rocks saavem sea tentacle tentacles toxin toxins water texture ancient-plant Australia Australian burrawang common cone cycad cycads dioecious erect firm-fronds fruit glaucous hardy inedible large leaves macrozamia-riedlei pineapple-like-cones poisonous seed-cones seed-pods toxic waxy-coating Western-Australian widespread zamia-palms zamias african brown color colors colour colours cucumber-tree cylindrical-fruit herbal-medicine kigelia-africana long-fruit-stalk long-sausage-like-fruit ornamental-tree pendulous purgative-properties rope-like peduncles sausage-tree seedy-fruit toxicity tree unusual woody woody-berry worsboom abstract abundance allergen anacardium background bulk colored coloured cooking drupe edible flavor flavoring flavour flavouring food health food healthy irritant juglans californica kernel kernels kidney-shaped nut nutmeats nutritious nuts plenty quantity roasted seed shapes size snack food surfaces tasty textures wallpaper advice alert announcement appropriate-behavior appropriate-behaviour avoid bait baits be-careful beware black care caution communicating communication concern danger dangerous destruction elimination foxes health information informing protect protection red risk risks risky safety sign signs unhealthy warning warning-sign white abundant angles appearances castor-beans castor-oil castor-oil-plant castor-seeds cluster clusters cotyledons Euphorbiaceae fast-growing flowers foliage highly-toxic inflorescences invasive large-leaves leaf medicinal palm-of-Christ palma-Christi ricinus-communis seedhead shrub shrubbery spiky-green-seed-capsule spiny surface textured vegetation wasteland-weed weed