1. Choerospondias axillaris (Roxburgh) B. L. Burtt & A. W. Hill, Ann. Bot. (London), ser. 2. 1: 254. 1937.
南酸枣 nan suan zao
Deciduous trees, 8-20 m tall; branchlets dark purplish brown, minutely pubescent to glabrous, lenticellate. Petiole inflated at base, petiole and rachis minutely pubescent to glabrous; leaf blade 25-40 cm, imparipinnately compound, with 3-6 leaflets; leaflet petiolule slender, 2-5 mm, glabrous to minutely pubescent; leaflet blade ovate to ovate-lanceolate or oblong-ovate, 4-12 × 2-4.5 cm, papery, glabrous or abaxially with tufts of hair in vein axils, base ± oblique, broadly cuneate to rounded, entire or serrate at base, apex long acuminate, lateral veins 8-10 pairs, prominent on both surfaces, reticulate venation obscure. Male inflorescence 4-10 cm, minutely pubescent to glabrous; floral subtending bracts minute. Male flowers: calyx minutely pubescent to glabrous, lobes triangular, ca. 1 mm, apically obtuse, with purplish red glandular-ciliate hairs along margin; petals oblong, 2.5-3 mm, with brown venation, recurved at anthesis; stamens equal to petals in length, anthers oblong, ca. 1 mm. Female flowers solitary in axils of distal leaves, larger than male flowers; ovary ca. 1.5 mm, 5-locular, style ca. 0.5 mm. Drupe ellipsoidal or obovate-ellipsoidal, yellow at maturity, 2.5-3 cm, ca. 2 cm in diam.; endocarp 2-2.5 × 1.2-1.5 cm.
Lowland, hill, and mountain forests; 300-2000 m. Anhui, Fujian, S Gansu, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, Taiwan, SE Xizang, Yunnan, Zhejiang [Bhutan, Cambodia, India, Japan, Laos, Nepal, Thailand, Vietnam].
