The Pin oak. (Q. palustris.) The Pin oak forms a tree in moist situations, varying in height from 60 to 80 feet. The great number of small branches intermingled with the large ones, have given rise to the name of this variety. It is a hardy, free growing species, particularly upon moist soils. Loudon considers it, from its "far extending, drooping branches, and light and elegant foliage," among the most graceful of oaks. It is well adapted to small groups, and is one of the most thrifty growing and easily obtained of all our northern oaks.