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| Primulina arcuata G.L.Xu & L.Ding, in Xu, Chen, Wu, Cai, Zhou, Zeng et Ding, 2023. |
Abstract
Based on morphological observations and comparisons, a new species of Primulina (Gesneriaceae), Primulina arcuata G.L.Xu & L.Ding, is described and illustrated. This new species resembles P. jiulianshanensis in leaf blade shape, but differs from the latter by corolla tube curved-tubular (vs. funnelform); calyx lobes oblong (vs. lanceolate); peduncle, pedicel, both surfaces of bracts, both surfaces of bracteoles and abaxial surface of calyx lobes covered with glandular-puberulent hairs (vs. with eglandular-puberulent hairs). A detailed description, photographs, distribution information and a provisional conservation status assessment are provided.
Keyword: Flora of Jiangxi, IUCN, Morphology, Primulina jiulianshanensis, Taxonomy, Xiaowudang Scenic Spot
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| Primulina arcuata sp. nov. A. habitat B. population. C. habit, D. inflorescence, E. adaxial leaf surface, F. abaxial leaf surface. |
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| Primulina arcuata sp. nov. A. habit, B1. adaxial leaf surface, B2. abaxial leaf surface, C. bracks, D. flower in side view, E. flower in front view, F. opened corolla, showing stamens and staminodes, G. calyx lobes, H. pistil. Di Hu drew them based on wild individuals collected from the type locality. |
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| Primulina arcuata sp. nov. A. adaxial surface of calyx lobes, B. abaxial surface of calyx lobes, C. adaxial surface of bracts, D. abaxial surface of bracts, E. corolla tube in side view, F. opened corolla, showing stamens and staminodes, G. pistil, H. one of lateral staminodes, I. stamens and anthers, J. immature capsules, K. transverse section of capsule. |
Primulina arcuata G.L.Xu & L.Ding, sp. nov.
弧冠报春苣苔
Diagnosis: This new species differs from Primulina jiulianshanensis (Fig. 4) in corolla tube curved-tubular (vs. funnelform); calyx lobes oblong, 4–6 × 1–2 mm (vs. lanceolate, 8–11 × ca. 2 mm); lateral staminodes 1–3 mm long (vs. ca. 6 mm long), central staminodes adnate 9–16 mm above corolla tube base (vs. 5–6 mm above corolla tube base); peduncle, pedicel, both surfaces of bracts and bracteoles, abaxial surface of calyx lobes covered with glandular-puberulent hairs (vs. with eglandular-puberulent hairs). The detailed morphological comparison of P. arcuata and P. jiulianshanensis in Table 1.
Etymology: The specific epithet is derived from the curved corolla tube of this new species.
Vernacular name: 弧冠报春苣苔 (Chinese name); Hú Guàn Bào Chūn Jù Tái (Chinese pronunciation).
Guo-Liang Xu, Tao-Ran Chen, Xiao-Gang Wu, Wei-Long Cai, Xiao-Hai Zhou, Nuo-guo Zeng and Li Ding. 2023. Primulina arcuata, A New Species of Primulina (Gesneriaceae) from the Danxia Landform in Jiangxi, China. Taiwania. 68(4); 391-397. taiwania.NTU.edu.tw/abstract/1954
