This CSI screencap contains
beech, beech tree, live oak, american elm, white elm, water elm, rock elm, and ulmus americana.
There might also be
oak, oak tree, poplar, poplar tree, california white oak, valley oak, valley white oak, roble, and quercus lobata.
Just a quirky little CSI fan video to "La Vie Boheme" from RENT! (Original Broadway Cast Recording). I thought it was about time one existed. Warning: mild sexual content and swearing.