abstract appearance closeup color coloration colored colors colour coloured colours contrast perspectives pods potential productive seed-cases seed-pods seeds surface surfaces surfacing texture textured textures thick variations variety various auckland new zealand seed tree Beech tree seeds natural shapes nature's shapes nature's textures oval shapes seed pods seed shapes star shapes. background bicolored foliage bicoloured foliage brown coloring colouring contrasting display foliage garden green greenery growth leaves light mature leaves plants sunlight sunshine trees vegetation wallpaper winged seed pods ament betula pendula catkin cylindrical flower cluster deciduous female maturing seed cases seed release silver birch trees wind-pollinated winged-seeds autumn mast nature abundant cannonball like cannonball tree containers couroupita guianensis fruit hard large lecythidacceae round shells unusual usage utensils woody shells ancient-plant Australia Australian burrawang common cone cycad cycads dioecious erect firm-fronds glaucous hardy inedible macrozamia-riedlei pineapple-like-cones poisonous seed-cones toxic toxins waxy-coating Western-Australian widespread zamia-palms zamias bark blackened burnt caution cautious damp danger dangerous dead dry fruits lacking depth Roots rough surface roots tangled trip tripping