Short answers, pulled from the story.
Scientists discovered pollen grains from the Late Cretaceous period of Wyoming that date back 81 to 82 million years. These tiny fossils represent the oldest known evidence of the beech lineage and prove the genus existed long before modern forests took shape across the Northern Hemisphere.
Modern classification systems recognize fourteen accepted species divided into two subgenera named Englerianae and Fagus. Five extant species exist in continental and insular East Asia alone while two pseudo-cryptic species inhabit eastern North America including the American beech.
Beech trees require deep soil with good drainage to survive successfully and thrive best when soil pH measures between 6 and 7.5 units. Shallow root systems make these plants vulnerable to drought conditions during dry spells yet they cannot live in waterlogged areas.
The beech blight aphid Grylloprociphilus imbricator attacks American beech trees across eastern regions while fungi named Neonectria faginata and Neonectria ditissima produce cankers that girdle and kill trees annually. A different threat emerged when scientists discovered Beech leaf disease in Ohio during 2012 caused by the nematode Litylenchus crenatae mccannii.
European beech yields tough timber weighing approximately 720 kilograms per cubic meter which builders use for furniture construction flooring plywood and household items. Drum shells frequently utilize beech for its resonant acoustic properties while textile modal rayon derives cellulose from pulped beech wood fibers.
Roman statesman Pliny the Elder described beech mast as the sweetest of all nuts and people besieged on Chios survived entirely on mast during ancient conflicts. Ancient Indo-European people used beech bark as writing material especially in religious contexts where runic tablets made from beech wood were common before paper became widespread.