American mountain-ash

This small tree or large shrub can grow up to 10 meters tall. It has a short trunk with smooth, reddish-brown bark marked by raised lenticels—tiny pores in the bark that allow the tree to exchange gases with its environment.

The American mountain-ash has slender, spreading branches that form a narrow, rounded crown.

Its leaves are made up of 13 to 15 leaflets. Each leaflet is a subdivision of a single leaf and has a narrow, lance-shaped (lanceolate) form. The tip of each leaflet tapers to a fine point (acuminate tip), while its edges are finely serrated.