长叶枫 chang ye feng

Trees evergreen, to 5 m tall, andromonoecious. Bark brown or gray, smooth. Branchlets purplish, glabrous. Petiole 2-2.5 cm, slender; leaf blade abaxially glaucous, adaxially green, ovate to oblong, 4.5-8 × 2-2.5 cm, papery, adaxially glabrous, basal veins 3, lateral veins 4 or 5 pairs, base rounded, margin entire or slightly undulate, apex acuminate. Flowers yellow-green. Sepals and petals 5. Stamens 8. Infructescence terminal, corymbose, glabrous, with leaves at base; pedicels 2-2.5 cm. Samaras 1.5-1.7 cm; wings light yellow, ca. 5 mm wide; nutlets brown, convex, ca. 4 mm in diam. Fl. Mar-Apr, fr. Sep-Oct.

● Mixed forests near streams; 300-1000 m. SE Gansu, N Sichuan.