article: Hardwood
links: Cherry Lumber Olive tree Hackberry Beech Guinness Book of World Records Ede Walnut Flooring Oak Ash tree Aspen Alder Sassafras Density Cottonwood Maple Horse chestnut Populus Willow Tropics Birch Hickory Containerization Olea capensis China United States of America Conifer cone Mortar and pestle Luzon Elm