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| Oxalis shibeishanensis Huan C. Wang & Y. Tian
in Tian, Yang, Liu & Wang, 2020.
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Abstract
Oxalis shibeishanensis Huan C. Wang & Y. Tian (Oxalidaceae), belonging to O. subsect. Oxalis, is described and illustrated as a new species endemic to Yunnan, Southwest China. It is most similar to O. obtriangulata, but clearly differs from the latter by its 1.5–3 cm long, 3–9 cm wide leaflets with broadly cuneate base and not emarginate apex, 2-flowered inflorescences, narrowly ovate to broadly lanceolate sepals, and the petals being bifid at the apex.
Keyword: China, endemism, new species, Oxalidaceae, Oxalis, Oxalis obtriangulata
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| Fig. 2. Oxalis shibeishanensis sp. nov. A. Habit, B. Portion of inflorescence showing bracts, C. Flower with pedicel, D. Flower at front view, E. Young fruit. |
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| Fig. 1. Oxalis shibeishanensis sp. nov. A, B. Habit, C. Top part of rhizome with petioles, D. Adaxial surface of leaflet, E. Abaxial surface of leaflets, F. Upper portion of inflorescence, G. Flower with pedicel, H. Flower at front view, I. Pedicel and sepals, J. Lateral view of flower with two petals and two sepals removed, K. Petal apex. |
Oxalis shibeishanensis Huan C. Wang & Y. Tian, sp. nov.
石碑山酢漿草
Type: CHINA. Yunnan Province, Shuangbai County, Anlongbao village, Shibeishan Mountain, ..., 24 March 2019, H. C. Wang, F. Yang, Q.P. Wang & Y. R. Li SB5788 (holotype: YUKU [02070800]!, isotypes: YUKU [02070801, 02070802, 02070803]!)
Diagnosis: Oxalis shibeishanensis is most similar to O. obtriangulata, but clearly differs from the latter by its 1.5–3 cm long, 3–9 cm wide leaflets with broadly cuneate base and not emarginate apex, 2-flowered inflorescences, narrowly ovate to broadly lanceolate sepals, and petals being bifid at the apex.
Distribution and habitat: Oxalis shibeishanensis is known only from two very close localities in Shibeishan Mountain of Shuangbai County, in central Yunnan Province, Southwest China. It usually grows on the moist and shady places near streams or swamps, at altitudes of 1950–2100 m.
Etymology: The specific epithet refers to the type locality, the Shibeishan Mountain of Shuangbai County, Southwest China.
Ye Tian, Feng Yang, Xiao-Lan Liu and Huan-Chong Wang. 2020. Oxalis shibeishanensis (Oxalidaceae), A New Species from Yunnan, Southwest China. Taiwania. 65(3); 360-363. taiwania.ntu.edu.tw/abstract.php?type=abstract&id=1695
