The burls that grow on eucalyptus trees in Australia are harvested without damaging the tree. These burls make nice winged bowls due to the dramatic burl figure.  Some eucalyptus burls, like the gimlet winged bowl in the first row, have a honeycomb of pitch pockets that form interesting patterns.  The gimlet burl in the bottom row had few pitch pockets and burl eyes, but has a wide range of different shades of brown and dark red wood. Red mallee, morel, vasticola and coolibah burls have a dramatic color contrast between the red heartwood and the cream colored sapwood.  Eucalyptus burls may have internal checks that occur during shipping or voids caused by insect damage. In some cases, I fill the small cracks with crushed turquoise (coolibah burl bowl in the 2nd row) but leave the larger voids caused by insects unfilled (Red Morrell burl, 2nd row).