Description from Flora of China
Quercus dodonaeifolia Hayata, Icon. Pl. Formosan. 3: 181. 1913; Pasania dodonaeifolia (Hayata) Hayata; Synaedrys formosana (Hayata) Koidzumi f. dodonaeifolia (Hayata) Kudo.
Trees ca. 10 m tall. Young shoots ± sulcate; branchlets of last year growth obscurely lenticellate. Petiole 4-8 mm, base ± thickened; leaf blade narrowly lanceolate to oblanceolate, 5-14 × 1-2 cm, rigidly leathery, base cuneate and decurrent on petiole, margin entire, apex obtuse, rounded, or acute and usually slightly recurved; secondary veins 8-12 on each side of midvein, abaxially inconspicuous, adaxially slightly impressed; tertiary veins not visible. Male inflorescences unknown. Infructescences 3-5 cm; rachis slender, 1.5-3 mm thick, conspicuously lenticellate. Cupules solitary, scattered on rachis, discoid, 3-6 mm × 1-1.4 cm, enclosing basal part of nut, wall thickly woody; bracts spirally arranged or basal ones united into concentric rings, triangular, small, appressed, tawny tomentose. Nut broadly conical, 1-1.5 × 1-1.4 cm, base flat, apex pointed; scar 7-10 mm in diam., concave. Fl. Feb-May, fr. Oct-Dec.
* Mixed mesophytic forests; 500-1500 m. S Taiwan