5. The wood from which species of tree, commonly planted in English graveyards, was the preferred material for constructing the English warbow?
From Quiz The English Warbow
Answer:
The Common (or European) Yew
After seasoning, the Common or European Yew, makes an ideal bow wood. The darker heartwood, which forms the 'belly' of the bow, is strong and resists in compression whilst the paler sapwood, which forms the 'back', performs far better in tension. This means that, as the bow is drawn, it becomes a natural spring and imparts the greater part of its power to the arrow than many other bow woods. Surprisingly, the best yew used by the English was imported from Spain and Portugal but as this source dried up they were forced to look elsewhere. The Yew that grows in the poor soil of the Alpine foothills of Italy is generally considered to be the best and is still used today, although only in very small quantities due to it's rarity and resultant high cost.