I have noticed that too Brian. The methodological naturalist in me wants to say, "well, maybe there is just a lot of trees that are medicinal or have thorns, and we just notice our bow trees and overlook the others". But the mystic bowyer in me says, maybe there is something to the idea of bows being feminine in spirit (what, you didn't know bows have spirits?
). Clearly the bow has very feminine attributes, whereas the arrow is clearly male (A widespread belief of "primitive" cultures). So logically the trees that bow wood comes from would be of the female spirit too, right? So that explains why bow wood trees have the power to heal and the power to poison, why they hold great treasures of beauty but are wrapped in snarly thorns, why they always want to go out, but can't ever seem to get the dishes done...