dotted eatable fungus grow head kania mushroom nature parasol plant tasty acorn cupule decoration food isolated nut oak seed shape symbol tannin tree basket flowers green handmade leaves myrtle Sardinia sardinian spiral tradition traditions white blade Blankenburg buckeye castor chestnut damage disease germany horse-chestnut leaf leaf miner abstract blue close-up drop droplets h2o liquid macro pattern red reflective render splash water watersplash wet