Part I

Ixeridium (A.Gray) Tzvelev；This genus is accepted；https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:1073325-2

Ixeridium (A.Gray) Tzvelev；Tzvelev, Fl. U.R.S.S. 29: 382 2000；https://www.biodiversitylibrary.org/page/30063536#page/422/mode/1up
- Ixeris sect. Ixeridium A.Gray, Mem. Amer. Acad. Arts ser. 2, 6: 397 1859；https://www.biodiversitylibrary.org/page/14224058#page/431/mode/1up
- Ixeris sect. Ixeridium (A. Gray) Kitam.；Kitam. in Bot. Mag. Tokyo 49: 281. 1935；Kitamura, Siro 1935 Ixerides Japonicae Bot. Mag. Tokyo 49 (581): 280-289
- Ixeris sect. Ixeridium (A. Gray) Kitam.；Mem. Coll. Sci. Univ. Kyoto ser. B. 23: 108. 1956；Kitamura, Siro 1956 Compositae Japonicaee (Pars Quinta) Memoirs of the College of Science, University of Kyoto. Series B 23(1): 105-168

Part I-A

《中国植物志》第80(1)卷 (1997) >> 245页 PDF >> 小苦荬属 Ixeridium；http://www.iplant.cn/info/Ixeridium?t=z
FOC Vol. 20-21 Page 6, 196, 198, 326, 328, 333；73. Ixeridium (A. Gray) Tzvelev, Fl. URSS. 29: 388. 1964.；小苦荬属；http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=116667
e-Flora of Thailand；56. Ixeridium (A.Gray) Tzvelev；https://botany.dnp.go.th/eflora/floraGenus.html?factsheet=Ixeridium&tdcode=06375

門田裕一，瀨戶口浩彰，副島顯子，東馬哲雄，中田政司，森田竜義，米倉浩司；日本の野生植物 (改訂新版) 5: 278 2017；大橋広好，門田裕一，邑田仁，米倉浩司，木原浩 2017 日本の野生植物 (改訂新版) (5) ヒルガオ科～スイカズラ科平凡社 ISBN 978-4-582-53535-8

Nakamura, Koh, Shih-Wen Chung, Yoshiko Kono, Meng-Jung Ho, Tian-Chuan Hsu and Ching-I Peng 2014 Ixeridium calcicola (Compositae), a New Limestone Endemic from Taiwan, with Notes on Its Atypical Basic Chromosome Number, Phylogenetic Affinities, and a Limestone Refugium Hypothesis. PLoS ONE 9 (10): e109797

Pak, Jae-Hong; Kawano & Shoichi 1992 Biosystematic Studies on the Genus Ixeris and its Allied Genera (Comp o sitae-Lactuceae) (IV) : Taxonomic Treatments and Nomenclature Mem. Fac. Sci. Kyoto Univ. (ser. Biol.) 15: 29-61