acknowledgement ANZAC-memorials appearance Australian basic communication contemplation dates defence-forces historic historical history lest-we-forget light loss memorial memories metal metal-wrearth peace raised reflection remembering remembrance reminder sadness shadows slogan smooth soldiers stonework sunlight sunshine symbol symbolic tarnish tarnished tribute wall war war-memorials World-War-I wreath WWI years branches branching Cacti cactus coloring colors colouring colours dangerous display edges fine flora flowering fruiting garden garden-plants green irregular leaf long multiple-branched perennial pointed points prickles Prickly protection protective risks shape shapes sharp skin soft-wooded-perennial spikes spination spines spiny succulent surface surfaces texture textures to-the-point arid barrel barrel-cactus clumps clusters compact covered dry echinocactus garden-display globose globular gravel ornamental pronounced-ribs ribbed ribbing ribs rocks rocky round shaped symmetrical symmetry thick-tough-skin