Taxonomic studies on the genus Sanicula (Apiaceae) from China (): The clarification of some morphological distinction between S. orthacantha var. orthacantha and S. orthacantha var. brevispina, with the reduction of S. petagnioides to the synonymy of the former, and S. orthacantha var. stolonifera to Author Li, Hui-Min 0000-0001-6660-7620 Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, Jiangsu, China & lihuimin @ cnbg. net; https: // orcid. org / 0000 - 0001 - 6660 - 7620 lihuimin@cnbg.net Author Zhou, Wei 0000-0003-1627-1529 Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, Jiangsu, China & zhouweigreen 111 @ 163. com; https: // orcid. org / 0000 - 0003 - 1627 - 1529 Author Song, Chun-Feng 0000-0003-2077-0486 Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, Jiangsu, China & cfsong 79 @ cnbg. net; https: // orcid. org / 0000 - 0003 - 2077 - 0486 cfsong79@cnbg.net text Phytotaxa 2022 2022-05-26 548 1 1 25 journal article 61136 10.11646/phytotaxa.548.1.1 7d32b23a-0a48-4f54-8d43-c572ba57be5b 1179-3163 6592466 Key to two varieties of Sanicula orthacantha - Rhizome short, tuberlike, woody, oblique rootstock bearing elongated, fibrous roots, occasionally with fleshy stoloniferous ......... ............................................................................................................................................................................. 1a. var. orthacantha - Rhizome slender, elongate and lignified nodes stoloniferous ................................................................................ 1b. var. brevispina