4. Pyrenaria oblongicarpa Hung T. Chang, Acta Sci. Nat. Univ. Sunyatseni. 22(3): 62. 1983.
长核果茶 chang he guo cha
Trees to 10 m tall. Young branches stout; current year branchlets pubescent, later glabrescent. Petiole ca. 5 mm, pubescent; leaf blade oblong-ovate, 14-30(-40) × (5-)7-11 cm, thinly leathery, abaxially pale green and sparsely appressed pubescent but densely spreading villous along midvein, adaxially dark green, glabrous, and becoming yellowish green when dry, midvein abaxially elevated and adaxially impressed, secondary veins 10-15 on each side of midvein, abaxially raised and adaxially visible, base rounded to subcordate, margin serrate, apex acuminate to shortly caudate. Flowers axillary, solitary, subsessile, 4-5 cm in diam. Bracteoles and sepals ca. 15, persistent, ovate to semiorbicular, 2-10 × 2-15 mm, leathery, outside gray sericeous, inside glabrous, margin scarious and ciliolate. Petals 5, pale yellow, obovate to oblong-obovate, 2-25 × 1.5-2 cm, outside sericeous. Stamens numerous, ca. 1.5 cm, glabrous; outer filament whorl basally slightly connate and adnate to petals. Ovary ovoid, ca. 3 mm, densely flavescent tomentose; styles 5, distinct, ca. l cm, basally pubescent. Fruit drupaceous, indehiscent, ovoid to long ovoid, 4.5-7 × 4-5.5 cm, 5-loculed with 2-4 seeds per locule, with 5 longitudinal grooves, apex truncate to slightly sunken; pericarp ca. 5 mm thick and fleshy when fresh, ca. 3 mm thick and spongy when dry. Seeds brown, laterally compressed, oblong, 2-3.5 × 1-1.5 cm, shiny. Fl. Apr-May, fr. Oct-Nov. 2n = 30*.
● Evergreen broad-leaved forests; 700-900 m. Yunnan (Hekou, Maguan).