What is the national tree of Scotland?

Two billion-plus describes the number of trees in Scotland, according to Scotland's Trees, Woods and Forests, published with an introduction by Allan Wilson, Deputy Minister for Environment and Rural Development April 2, 2002. That number involves one of every 14.83 acres (6 hectares) in Scotland. Its total rises yearly since Scotland's new and replanted (from already harvested) woodlands increases by 24,710.54 acres (10,000 hectares) every year.