altitude buds cold ecology flowers green habitat hardy harsh high lichens low growing natural nature norway norwegian odd pink plants red resilient small strange unusual white biotype boulder bush canada color colour conifers environment foliage landscape leaf leaves montane mountain plant rock Rockies Rocky Mountains shrub snow trees blue clouds England english field footpath grass Great Britain hill hilltop meadow quality sky slope South Downs summer Sussex top wild algae barnacle beach biology chlorophyll coast coastal creation kelp life marine ocean photosynthesis sand science sea seaweed shell shore shoreline slimy slippery tidal tide bank brassicaceae Crambe maritima Cruciferae Cuckmere Haven gravel halophyte halophytic sea kale shingle stones appearance broadleaved damp herbaceous large leafy marsh marshland moist muddy murky rain raindrops reeds stalks stems swamp swampland swampy vegetation water watery wet wetland abundance abundant clover diverse diversity flora hills profusion rich umbellifer verdant architecture cascade dam fall force fresh freshness historical moss old oxygenated oxygenation power stone strength strong wales wall welsh woodland