Camellia hainingii, a new species of Theaceae in China Author Ye, Pin-Ming 0000-0003-0496-9110 Nanning Golden Camellia Park, Nanning 530022, Guangxi, China. & 1289127377 @ qq. com; https: // orcid. org / 0000 - 0003 - 0496 - 9110 1289127377@qq.com Author Huang, Yu-Song 0000-0003-2693-8518 Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, Guangxi, China. & huang-yusong @ 163. com; https: // orcid. org / 0000 - 0003 - 2693 - 8518 Author Huang, Jian-Feng 0000-0003-1656-0419 Encheng National Nature Reserve, Daxin 532300, Guangxi, China. & 584638115 @ qq. com; https: // orcid. org / 0000 - 0003 - 1656 - 0419 584638115@qq.com Author Liu, En-De 0000-0003-4424-9820 CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China. & liuende @ mail. kib. ac. cn; https: // orcid. org / 0000 - 0003 - 4424 - 9820 liuende@mail.kib.ac.cn Author Ma, Jin-Lin 0000-0002-2233-1535 Guangxi Forestry Research Institute, Nanning 530002, Guangxi, China. & majinlin 009 @ 163. com; https: // orcid. org / 0000 - 0002 - 2233 - 1535 Author Yang, Shi-Xiong 0000-0001-8472-1275 CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China. & shxyang @ mail. kib. ac. cn; https: // orcid. org / 0000 - 0001 - 8472 - 1275 shxyang@mail.kib.ac.cn text Phytotaxa 2022 2022-08-17 558 3 291 296 journal article 123003 10.11646/phytotaxa.558.3.5 d691ba59-4350-4f35-8d38-58355263f9b5 1179-3163 7003113 Camellia hainingii S.X.Yang et Y.S. Huang , sp. nov. , ( Figs. 1 & 2 ). Type :— CHINA . Guangxi : Daxin County , Encheng National Nature Reserve , on limestone in the evergreen broad-leaved forest, elev. 180 m , 15 September 2020 , S . X. Yang , P . M . Ye and F . Y . Wu 6389 ( holotype KUN barcode 1541643; isotypes KUN , PE , IBK , IBSC , K ) . Diagnosis: — Camellia hainangii is very similar to C. pachyandra Hu (1938: 131) , but differs by its abaxially glabrous (vs. pubescent along the midvein) leaf, glabrous (vs. pubescent) petiole, perules (bracteoles and sepals) 9–11 (vs. 6) with dense pubescent (vs. glabrous) inside; stamens 80–110 (vs. 40–50), inner filaments thin (vs. thick), ovary glabrous (vs. dense tomentose), capsule surface furfuraceous (vs. smooth) ( Table 1 ; Fig. 2 ). Arbor, 5–12m tall; young branches reddish brown, glabrous; terminal buds glabrous or subglabrous. Leaves thinly leathery, oblong or narrow elliptic, 7.5–11.0 (–13.0) × 2.5–3.5 (–4.5) cm, apex acuminate to caudate with a tip ca. 1.0 cm long, base cuneate, margin sharply serration, adaxial surface dark green, shining and glabrous, abaxial surface yellow-green, glabrous, scattered dark brown cork-warts ( sensu Sealy 1958 ), lateral veins 7–10 pairs, midvein, lateral veins and reticulate veins sunken adaxially and protruding abaxially, semitransparent; petiole 7–10 mm long, glabrous. Flowers axillary, solitary, subsessile, white or yellowish-white, 2.0–2.5 (–3.0) cm in diam; bracteoles and sepals 9–11, ovate, broad ovate to suborbicular, increasing in size upwards, 1.5–4.0 × 2.0–5.0 mm, abaxially green, glabrous, adaxially densely yellowish-white pubescent, margin narrow scarious and ciliate. Petals 6–8 in 2–3 whorls, outermost 2–3 sepaloid, the rests petaline, glabrous on both sides, suborbicular to elliptic, 6.0–13.0 × 6.0 mm, slightly connate at the base. Stamens numerous (80–110), 8.0–10.0 mm long, glabrous; outer filaments basally connate ca. 1/2–3/5 into a tube and adnate to the corolla for ca. 1.5 mm , inner filaments distinct, slender. Pistil ca. 4.0 mm long; ovary subglobose, 3-loculed, glabrous; style 3, free, very short, 1.5–2.0 mm long, glabrous. Capsule subglobose, grayish brown, ca. 2.0 cm in diam; pericarp <1.0 mm thick when dry, furfuraceous, splitting into 3 valves. Seeds 1 per locule, globose, ca. 1.0– 1.5 cm in diam, dark brown, smooth. Fl. Sep.–Nov., fr. Jul.