Trees 10-15 m tall. Branchlets of current year purplish brown, sulcate. Petiole 2-3 cm; leaf blade usually ovate, sometimes elliptic, oblong, or suborbicular, 6-15 × 4-6.5 cm, leathery, abaxially with pulverulent scalelike glands, base broadly cuneate, subrounded, or acute, ± auriculate, and sometimes asymmetric, margin entire, apex acute, acuminate, or long caudate; secondary veins 9-13 on each side of midvein; tertiary veins abaxially inconspicuous, reticulate. Male inflorescences arranged in a panicle, 4-8 cm; rachis tawny puberulent. Female inflorescences 8-10 cm; cupules in clusters of 3-5, rarely solitary. Cupule disc-shaped to cupular, rarely to 7 mm, 1.4-2 cm in diam., enclosing 1/8-1/6 of nut, outside tawny puberulent, wall to 3 mm and woody near base; bracts imbricate, triangular to rhomboid, squamose. Nut broadly conical, 1.4-2.2 cm in diam., often ± white farinose, apex shortly pointed or flat, wall ca. 3 mm thick near base; scar at base of nut, 0.9-1.2 cm in diam., concave. Fl. May-Jul, fr. Sep-Nov of following year.
Home