Erect-branched small or moderate deciduous trees. Twigs moderate, with prominent lenticels, rounded; pith round, brown, continuous. Buds oblong, the terminal large, the lateral reduced, solitary, sessile, more or less pubescent with long hairs matted in gum. Leaf-scars alternate, raised, crescent-shaped or linear; bundle-traces 3 or 5; stipule-scars none.

Fig. 136. Sorbus americana

Fig. 136. Sorbus americana.

1. S. americana Marsh. Mountain-Ash. (Pyrus americana (Marsh.) DC.). A tree 6-10 m. tall, 2-3 dm. in diameter; twigs rather thick, with prominent lenticels; buds oblong, the terminal large, the lateral smaller, solitary, sessile, more or less pubescent with long hairs matted in gum; leaf-scars raised, crescent-shaped or linear; bundle-traces 3 or 5; fruits orange-red, 4-6 mm. in diameter, holding through the winter, but fading. Woods, Newfoundland to Minnesota, south to Georgia and Illinois (Fig. 136).