Araucaria conifer England english evergreen Great Britain monkey puzzle nature norfolk park parkland pine Somerleyton tree angles araucaria heterophylla Australian conifer background black branches common focus foliage living Christmas tree Norfolk pine ornamental outdoor plant prolific pyramid shape sepia shapes silhouette symmetrical textures bark big large redwood Sequoia shade shadow black-and-white branch monochrome color colour dense depth green greenery horizontal whorls incurved indoor plant lanceolate narrow leaves overlapping potted plant spikes spiky