Short answers, pulled from the story.
The name beech is inextricably linked to the word book because the smooth, pale bark of the tree served as the primary writing surface for Germanic societies. Before the invention of paper, the Old English word bōc carried the dual meaning of both the tree and the written page. This linguistic duality persists in modern languages from English to German.
The evolutionary history of the beech genus stretches back to the Late Cretaceous period, with fossil pollen dating to 81 to 82 million years ago found in the ancient landscapes of Wyoming. The oldest representatives of the modern genus likely appeared in the Paleocene of Arctic North America, specifically in western Greenland. This ancient lineage has persisted for over 80 million years, adapting to changing climates and shifting continents.
Modern taxonomy divides the genus Fagus into two distinct subgenera, Englerianae and Fagus, which diverged from one another in the Early Oligocene era, approximately 32.1 to 33.4 million years ago. The subgenus Englerianae is found exclusively in East Asia and is characterized by low-branching trees with multiple major trunks and yellowish bark. The subgenus Fagus encompasses the European beech, the American beech, and various species found in East Asia and the Caucasus.
The leaves of the beech are deciduous, dropping in autumn to reveal a central vein with side-veins that run parallel to each other and end in a tooth on the thin leaf-blade. This unique leaf structure is a key diagnostic feature of the genus, distinguishing it from other trees in the Fagaceae family. The leaves are found on trees that thrive in windy places, shade from other trees, and cold climates.
The fruit of the beech tree, known as beech mast, has been a source of sustenance and survival for humans and animals alike, with historical accounts describing its use during times of siege and famine. The Roman statesman Pliny the Elder recorded in his Natural History that the beech fruit is the sweetest of all nuts, and that the people of the city of Chios, when besieged, supported themselves wholly on mast. The nuts can be roasted and pulverized into a coffee substitute, providing a caffeine-free alternative that has been used for centuries.
The most recent threat to beech trees is beech leaf disease, which was discovered in Ohio in 2012 and has since spread through the Eastern United States and Canada. This disease is spread by the nematode Litylenchus crenatae mccannii and has the potential to cause significant damage to beech populations. Beech bark disease is another fungal infection that affects trees in the Eastern US, Canada, and Europe, caused by scale insects that allow fungi to produce cankers that can eventually girdle and kill the tree.