Pterocarya sorbifolia Siebold & Zuccarini.

Trees to 30 m tall. Leaves odd-pinnate, 20-25(-40) cm; petiole 3-7 cm, pubescent; rachis wingless, pubescent; leaflets (7-)11-21; lateral leaflets with petiolule ca. 1.5 mm, blade ovate-oblong to broadly oblanceolate, 6-12 × 1.5-4 cm, abaxially woolly pubescent along midvein and secondary veins, base oblique, rounded or broadly cuneate, apex acuminate; terminal petiolule 1.5-2 cm. Fruiting spike 20-30(-49) cm, axis pubescent. Nutlets 8-9 mm, base rounded, apex obtusely conical, glabrous; wings semiorbicular, ca. 1.3-2.1 × 0.9-1.8 cm. Fl. May, fr. Jun-Jul.

Wet areas along riverbanks and mountain streams. E Shandong (Lao Shan) [Japan]