来自MSN3 个月
Why Scotland's native aspen trees tremble – and have good reason to do so
Aspen has distinctive, almost-circular leaves with flattened petioles or stems. This flattening causes the leaves to tremble or flutter in the slightest breeze, thereby giving the tree one of its ...
Nature5 年
Case Study: The Glorious, Golden, and Gigantic Quaking Aspen
Aspen occur as males and females separately (dioecious), unlike the majority of tree species ... show in the Rocky Mountains attracts many "leaf peepers" who find the brilliant gold, yellow ...
来自MSN4 个月
New initiative launched to save one of Scotland's most endangered tree species
More than 60 insect species are known to feed on the tree, which has ... and the endangered aspen hoverfly favours aspen deadwood. Aspens’ high rate of leaf fall and production of deadwood ...
Sierra Sun Times4 天
Postal Service Announces Vibrant Leaves Fall Onto Postcard Stamps
March 17, 2025 - STRONGSVILLE, OH — The U.S. Postal Service celebrates the colorful sights of autumnal walks with the release of five new Vibrant Leaves postcard stamps. Each stamp showcases a single ...
Vibrant Leaves Fall Onto Postcard Stamps
The U.S. Postal Service celebrates the colorful sights of autumnal walks with the release of five new Vibrant Leaves postcard stamps. Each stamp showcases a single leaf from the aspen, sassafras, oak, ...