Sanicula orthacantha, Moore, 1875

Li, Hui-Min, Zhou, Wei & Song, Chun-Feng, 2022, 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, Phytotaxa 548 (1), pp. 1-25 : 19

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