Polylepis besseri

Polylepis besseri is a tree species within the Rosaceae family. It grows to a height of 2–6 m and is found in Bolivia, Chile North, and Peru. The leaves are imparipinnate, with 1–2 (rarely 3) pairs of leaflets, and are obtrullate in outline, measuring 3.6–4.0 × 2.5–3.0 cm. The rachises are densely tomentose, and the leaflet attachment points have tufts of long hairs. The leaflets are obovate, with the second pair from the terminal leaflet being the largest. The upper leaflet surfaces are smooth to slightly rugose and glabrous, while the lower surfaces are densely tomentose with hairs 0.6–0.8 mm long and a dense layer of short, white pannose hairs. The inflorescences are pendant, 3.6–8.9 cm long, with 7–9 flowers. The flowers are 8.3–8.6 mm in diameter, with 4 ovate, green sepals and 13–23 stamens. The fruits are turbinate, with 2–5 flattened ridges and spines, and are densely tomentose. The species is tetraploid.