Arbor, usque ad 12-25 m alta; rami teretes, ramulis griseo-brunneis, glabris, ra-mulis hornotinis, russis, primo paulo adpresso-pubescentibus, mox delapsis, glabrescen-tibus; gemmae terminatae arguste conicif ormes, dense flavo-brunneae appresso-pubescentes. Folia alterna, coriacea, obovato-elliptica. vel oblongo-elliptica, 8-12.5 cm longa, 2.7-3.8 cm lata, apice in formam breviter acuminata vel caudata subito attenua-to, basi cuneata, margine serrulata, supra viridia, glabra, subtus viridulia, primo Paulo cinereo-brunnea appresso-pubescentes, ad costam densissime, mox delapsa, glabrescentes glandulosa paulo russa, costa supra impressa, subtus elevata, nervis lateralibus-12-14-jugis, supra inconspicuis, subtus paulo conspicuis; petioli 1-1.2 cm longi, f ere glabri. Flores vulgo 2-5 axillares; pedicelli 6-8 mm longi, vulgo erecti, interdum paululo re-curvati, leviter pubescentes; bracteolae 2, deciduae vix bracteolarum delapsarum cicatri-cibus; notatae; sepala 5, rotundato-ovoidea, tenuia, longa vel lata 1.5 mm, apice orbicu-laria, apiculata, margine ciliata, extus paulo pubescentia vel fere glabra; petala 5, alba, oblonga vel obovato-oblonga, circa 8 mm longa, circa 4 cm lata, apice orbicularia, extusomnino glabra; stamina 17-20, 4-6 mm longa, filamenta 2.5-4.5 mm longa, sublibera, basi corollarum inserta, supra medium dense pilosa, infra medium glabra, an-therae ovoideae, circa 1 mm longae, pilosae, apice apiculatae; ovarium ovato-rotundatum, 3-4-loculare, ovula in quoque loculo plurima, stylus 3-4 mm longus, glaber, apicebrevis 3-4-lobatus. Fructus ovato-globosus, glaber, immaturus, circa 5 mm diam. , tylus persistens 4 mm longus, pedunculus circa 8 mm longus; semina minora, circa 7-12, brunnea, nitida, testae reticulatae.

Yunnan: Pingbian Xian（屏边县）, alt. 1200-1300 m, in dense forest, April, 18, 1954, tree, 25 m high, flower white, Mao Ping-yi（毛品一）3871 (type, PE); same locality, alt. 1260 m, in forest, Aug. 3, 1958, tree, 15 m high, fruit green, Mao Ping-yi（毛品一）2758; Jinping Xian（金平县）, alt. 1300 m, in dense forest, May, 23, 1956, tree, 12 m high, 2 5 cm D. B. H.（胸高直径）, fruit green, Zhongso Dui（中苏队）2553; same lcoality, alt. 1200-1300 m, April, 16, 1956, Yunda Dui（云大队）199.