Two new species of Oricymba (Bacillariophyta) from China, described with reference to the structure of the apical pore field Author Yuan, Li 0000-0003-0244-4871 College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China & liiyuan 0808 @ 163. com; https: // orcid. org / 0000 - 0003 - 0244 - 4871 Author Liu, Bing 0000-0002-8516-325X College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China & jsulb @ outlook. com; https: // orcid. org / 0000 - 0002 - 8516 - 325 X jsulb@outlook.com Author Rioual, Patrick 0000-0001-9491-9197 Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, P. O. box 9825, Beijing 100029, China & CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China & prioual @ mail. iggcas. ac. cn; https: // orcid. org / 0000 - 0001 - 9491 - 9197 prioual@mail.iggcas.ac.cn Author Yi, Man-Qi 0000-0002-0503-0626 College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China & 810847692 @ qq. com; https: // orcid. org / 0000 - 0002 - 0503 - 0626 810847692@qq.com Author Zheng, Yan 0000-0001-7074-0678 College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China & zhengyan 1016 @ 163. com; https: // orcid. org / 0000 - 0001 - 7074 - 0678 text Phytotaxa 2023 2023-04-05 591 3 181 195 http://dx.doi.org/10.11646/phytotaxa.591.3.1 journal article 56879 10.11646/phytotaxa.591.3.1 e672b641-dcba-4648-a929-6d17ec5c25ae 1179-3163 7800808

TABLE 1. Geographical and environmental information on the two sites investigated.

Sampling site and species	Coordinates and elevation (m asl.)	pH	Conductivity (μS̔cm–1)	Temperature (°C)	Sampling Date
Site 1, Oricymba sinensis sp. nov.	25°4′24″ N, 111°50′54″ E, 380	8.8 ± 0.1	40.5 ± 1.1	27.8 ± 0.1	October 4th 2021
Site 2, O. fanjingensis sp. nov.	27°49′48″ N, 108°45′53″ E, 500	7.6 ± 0.1	41.9 ± 0.2	9.7 ± 0.2	December 31st 2015