Apiaceae Apulia background fennel Foeniculum foliage Gargano green herb italian Italy leaves plant Puglia texture umbellifer Umbelliferae vegetable England english flowerhead flowers Great Britain natural nature pattern petals South Downs summer Sussex white wild Alexanders edible flowering plant perennial roadside Smyrnium olusatrum spring Suffolk yellow abundance abundant Bedfordshire damp field landscape many meadow profusion riverside cliff coast coastal Cornish cornwall fresh New opening creepy dead Finished flower giant hogweed head Heracleum mantegazzianum invasive macabre spent stem toxic umbel