Description from Flora of China
Quercus acutissima Carruthers subsp. chenii (Nakai) A. Camus; Q. acutissima var. brevipetiolata G. Hoo; Q. acutissima var. chenii (Nakai) Menitsky; Q. chenii var. linanensis M. C. Liu & X. L. Shen.
Trees to 30 m tall, deciduous. First-year branchlets ca. 1.5 mm thick. Petiole 0.5-1.5 cm; leaf blade broadly lanceolate to ovate-lanceolate, 7-12 × 2-3.5 cm, yellowish brown tomentose, glabrescent or only veins abaxially tomentose at axils, base shortly attenuate to broadly cuneate and slightly oblique, margin with spiniform teeth, apex acuminate; secondary veins 12-16 on each side of midvein; tertiary veins abaxially inconspicuous. Cupule cupular, ca. 8 mm × 1.5 cm including bracts, enclosing ca. 1/3 of nut; bracts from base to middle triangular, adherent to cupule, tomentose, ca. 3 mm, apical bracts linear, ca. 5 mm, rectiserial or inflexed. Nut ellipsoid, 1.5-2.5 × 1.3-1.5 cm, apex pale brown sericeous; scar ca. 5 mm in diam., slightly raised, stylopodium ca. 2 mm in diam., pale brown sericeous. Fl. Apr, fr. Oct of following year.
Very closely related to Quercus acutissima, and could just represent the small extreme of that species.
* Mixed mesophytic forests; below 600 m. Anhui, Fujian, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shandong, Sichuan, Zhejiang