Gold Rush. Otago. - Poplar Tree Is Commonly Known As Aspen And Cottonwood. It Belongs To A Populus Genus That Is Made Of About 35 Species Of Deciduous Flowering Plants Which Belong To The Family Salicaceae. Poplar Trees Are Native Of The Northern Hemishphere. Western Balsam Poplar Species Was The First Tree To Have Its Full DNA Code In The Year Of 2006. Poplar Trees Can Grow Anywhere Between 15 To 50 Meters Tall With Trunks Up To 2.5 Meteres In Diameter. The Bark Is Smooth Usually Even When Tree Gets Older. The Leaves Are Spirally Arranged And Come In Different Shapes. Small Leaves Are Usually On Side Shoots While Very Large Leaves Are On Strong Growing Lead Shoots. The Leaves Are Bright Gold In Fall. Photo