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| Vaccinium bangliangense Y.S. Huang & Y.H. Tong, in Huang, Nong, ... et Tong, 2022. |
Abstract
Vaccinium bangliangense, a new species from limestone areas in Guangxi, China, is described and illustrated. It is morphologically most similar to V. pseudotonkinense and V. sciaphilum in having small and dense obovate leaf blades with a retuse apex, hairy young branches and calyx and campanulate corollas, but can be distinguished from them by the distance of basal gland from petiole, the length of peduncle, pedicle and filaments, the indumentum of calyx tube and corolla and the existence of apical glands on calyx lobes. A table to distinguish the new species from other morphologically similar Vaccinium species, as well as colour plates of comparison of key characters, is also provided.
Keywords: limestone flora, morphology, new species, south-western Guangxi, Vaccinium
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| Vaccinium bangliangense Y.S. Huang & Y.H. Tong. A habitat B habit C young branch, showing the leaves with a sparsely villous margin D fruiting branch E flowering branch with tinged reddish flowers F inflorescence borne on leafless old stem with yellowish-green flowers G flower (lateral view) H flower (vertical view) I flower bud J, K flowers with opened corolla L flower with corolla and stamens removed M bracteole N transection of ovary O calyx tube and disc P androecium and adaxial (left), lateral (middle) and abaxial (right) view of a stamen Q infructescence R seeds. Scale bars: 5 mm (G–I, P, Q); 1 mm (M–O, R). |
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| A–C Vaccinium bangliangense Y.S. Huang & Y.H. Tong. A flowering branch with tinged reddish flowers B flowering branch with yellowish-green flowers C fruiting branch D–F V. pseudotonkinense D flowering branch with opened flower E flowering branch with unopened flower F fruiting branch G–I V. sciaphilum G flowering branch H leafy branch I fruiting branch. All by Yi-Hua Tong, except G by Xin-Xin Zhu. |
Vaccinium bangliangense Y.S. Huang & Y.H. Tong, sp. nov.
Diagnosis: Vaccinium bangliangense Y.S. Huang & Y.H. Tong belongs to V. section Conchophyllum Sleumer (1941) and is morphologically similar to V. pseudotonkinense Sleumer and V. sciaphilum C.Y. Wu in having small and dense obovate leaf blades with a retuse apex, hairy young branches and calyx and campanulate corollas, but can be distinguished from the former by basal glands on leaf blade margin at 0.3–0.8 mm (vs. 2.6–4 mm, Fig. 3C) distance from petiole, inflorescence with very short peduncle or up to 5 mm long (vs. very short, Fig. 2E), calyx lobes with ciliolate margin and a gland at apex (vs. with ciliate and glandular margin and without a gland at apex, Fig. 3D) and, from the latter, by inflorescence with very short peduncle or up to 5 mm long (vs. very short, Fig. 2G), longer (5–7 mm vs. ca. 3 mm) and glabrous (vs. densely pubescent, Fig. 2G) pedicel, glabrous or sparsely villous (vs. densely hispid) calyx tube, glabrous or sparsely pubescent (vs. densely hispid, Fig. 3F) calyx lobes with a gland at apex (vs. without a gland at apex, Fig. 2I) and densely villous (vs. glabrous) filaments. A detailed morphological comparison amongst the three species is summarised in Table 1.
Etymology: The specific epithet is derived from the type locality, Bangliang Gibbon National Nature Reserve of Guangxi, China. The Chinese name is given as “ 邦亮越橘 (pinyin: bāng liàng yuè jú)”.
Yu-Song Huang, Shi-Yue Nong, Xing-Kang Li, Gao Xie and Yi-Hua Tong. 2022. Vaccinium bangliangense, A New Species of Ericaceae from Limestone Areas in Guangxi, China. PhytoKeys. 194: 23-31. DOI: 10.3897/phytokeys.194.81018
