Abstract
Based on morphological comparisons of specimens and observations of living plants in the field we conclude that the key characters as the color of setae on the abaxial leaf sides and pedicles, and the number of ray florets which Jeffrey and Chen used to distinguish Synotis ionodasys from S. cappa are variable and not reliable, and all the characters of the former species (ferrugineous tomentum, 14–20 ray florets) are not distinct and fall within the variation range of the latter, thus making S. ionodasys conspecific with S. cappa.
References
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Tang, M., Hong, Y. & Yang, Q.E. (2013a) Synotis baoshanensis (Asteraceae), a new species from Yunnan, China. Botanical Studies 54: e17. https://doi.org/10.1186/1999-3110-54-17
Tang, M., Wang, L.Y. & Yang, Q.E. (2013b) Synotis xinningensis (Asteraceae), a new species from Hunan, China. Botanical Studies 54: e16. https://doi.org/10.1186/1999-3110-54-16
Tang, M., Wang, L.Y. & Yang, Q.E. (2013c) The identity of Synotis cordifolia (Asteraceae-Senecioneae). Journal of Tropical and Subtropical Botany 21: 101–108. [http://jtsb.scib.ac.cn/jtsb_cn/ch/reader/view_abstract.aspx?flag=1&file_no=3040&journal_id=jtsb_cn]
Tang, M., Ren, C. & Yang, Q.E. (2014) Parasenecio chenopodiifolius (Compsositae- Senecioneae) is a Synotis and conspecific with S. otophylla based on evidence from morphology, cytology and ITS/ETS sequence data. Nordic Journal of Botany 32: 824–835. https://doi.org/10.1111/njb.00574
Tang, M., Ren, C. & Yang, Q.E. (2017) Reinstatement of the Sino-Himalayan species Senecio pentanthus (Asteraceae, Senecioneae). Phytotaxa 292: 253–261. https://doi.org/10.11646/phytotaxa.292.3.5
Tang, M. & Chen, Y.S. (2021) Blumea hunanensis is a synonym of Synotis nagensium (Asteraceae: Senecioneae). Phytotaxa 487 (2): 149–156. https://doi.org/10.11646/phytotaxa.487.2.5
Zhang, R., Liu, Y.L. & Tang, M. (2021) Four new synonyms in Synotis (Asteraceae, Senecioneae). Phytotaxa 483 (3): 255–266. https://doi.org/10.11646/phytotaxa.483.3.5
Chen, Y.L. (1999) Synotis (C. B. Clarke) C. Jeffrey & Y.L. Chen. In: Chen, Y.L. (ed.) Flora Reipublicae Popularis Sinicae, vol. 77 (1). Science Press, Beijing, pp. 167?217.
Chen, Y.L., Nordenstam, B. & Jeffrey, C. (2011) Synotis (C. B. Clarke) C. Jeffrey & Y.L. Chen. In: Wu, Z.Y & Raven, P.H. (eds.) Flora of China, vols. 20–21. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, pp. 489–505.
Clarke, C.B. (1876) Compositae Indicae. Thacker, Spink and Co., Calcutta, 347 pp.
Clarke, C.B. (1889) On the plants of Kohima and Muneypore. The Journal of the Linnean Society, Botany 25: 1–107.
Craib, W.G. (1911) Contributions to the Flora of Siam (II). Bulletin of Miscellaneous Information / Royal Botanic Gardens, Kew 10: 385–448.
Don, D. (1825) Prodromus Florae Nepalensis. J. Gale, London, 256 pp.
Jeffrey, C. & Chen, Y.L. (1984) Taxonomic Studies on the Tribe Senecioneae (Compositae) of Eastern Asia. Kew Bulletin 39: 205–446. [https://www.jstor.org/stable/4110124?seq=1]
Joshi, S., Shrestha, K. & Bajracharya, D.M. (2013) Synotis managensis (Senecioneae: Asteraceae) – a new species from Manang, Central Nepal. Pleione 11 (2): 177–186. https://doi.org/10.26679/Pleione.11.2.2017.177-186
Fei, W.Q., Tang, M., Wu, X. & Ren, C. (2020) Proposal to conserve the name Senecio palmatisectus (Parasenecio palmatisectus) against S. pelleifolius (Asteraceae). Taxon 69 (1): 202–203. [https://onlinelibrary.wiley.com/doi/pdf/10.1002/tax.12192]
Handel-Mazzetti, H. (1936) Symbolae sinicae: Botanische Ergebnisse der Expedition der Akademie der Wissenschaften in Wein nach Su?dwest–China 1914–1918 (VII). Verlag von Julius Springer, Wien, pp. 1084–1450.
Handel-Mazzetti, H. (1937) Neue und bemerkenswerte chinesische Compositen, besonders aus dem Berliner Herbar. Notizblatt des Königl. botanischen Gartens und Museums zu Berlin 13: 607–661.
Hooker, J.D. (1881) Compositae. In: Hooker, J.D. (ed.) The Flora of British India, vol. 3. L. Reeve & Co., London, pp. 219–419.
Li, H.M., Lazkov, G.A., Illarionova, I.D., Tong, T.J., Shao, Y.Y. & Ren, C. (2018) Transfer of Senecio karelinioides (Asteraceae-Senecioneae) to Synotis based on evidence from morphology, karyology and ITS/ETS sequence data. Nordic Journal of Botany 32: 1–12. [https://onlinelibrary.wiley.com/doi/abs/10.1111/njb.01838]
Li, Z., Zheng, H.L. & Tang, M. (2020) Synotis panzhouensis (Asteraceae, Senecioneae), a distinct new species with red-purple pappus from southwestern Guizhou, China. Phytokeys 166: 79–86. [https://phytokeys.pensoft.net/article/58654/]
Ling, Y. (1937) Compositae sinenses novae vel minus cognitae (I). Contributions from the Institute of Botany, National Academy of Peiping 5 (1): 1–30.
Linnaeus, C. (1753) Species Plantarum, vol. 1. L. Salvius, Stockholm, 1200 pp.
Liu, S.W. (2004) Senecio L. In: Wu, Z.Y. (ed.) Flora Yunnanica, vol. 13. Science Press, Beijing, pp. 418–436.
Liu, Y.L., Zhu, X.X., Peng, Y.L. & Tang, M. (2021) Synotis jinshajiangensis (Asteraceae: Senecioneae), a new species from northwestern Yunnan, China. Phytotaxa 478 (1): 162–170. https://doi.org/10.11646/phytotaxa.478.1.12
Liu, Y.L., Zhang, R., Ren, C., Liu, B., Zhang, Y. & Tang, M. (2020) On the specific identity of Chinese endemic species Synotis longipes (Compositae-Senecioneae). Phytotaxa 472 (3): 269–276. https://doi.org/10.11646/phytotaxa.472.3.5
Sennikov, A.N., Nuraliev, M.S., Kuznetsov, A.N. & Kuznetsova, S.P. (2020) New national records of Asteraceae from Hoang Lien National Park, northern Vietnam. Wulfenia 27: 1–9. [https://www.zobodat.at/pdf/Wulfenia_27_0001-0009.pdf]
Tang, M. (2014) A Systematic Study of the Genus Synotis (Compositae-Senecioneae). PhD thesis. University of Chinese Academy of Sciences, Beijing.
Tang, M., Hong, Y. & Yang, Q.E. (2013a) Synotis baoshanensis (Asteraceae), a new species from Yunnan, China. Botanical Studies 54: e17. https://doi.org/10.1186/1999-3110-54-17
Tang, M., Wang, L.Y. & Yang, Q.E. (2013b) Synotis xinningensis (Asteraceae), a new species from Hunan, China. Botanical Studies 54: e16. https://doi.org/10.1186/1999-3110-54-16
Tang, M., Wang, L.Y. & Yang, Q.E. (2013c) The identity of Synotis cordifolia (Asteraceae-Senecioneae). Journal of Tropical and Subtropical Botany 21: 101–108. [http://jtsb.scib.ac.cn/jtsb_cn/ch/reader/view_abstract.aspx?flag=1&file_no=3040&journal_id=jtsb_cn]
Tang, M., Ren, C. & Yang, Q.E. (2014) Parasenecio chenopodiifolius (Compsositae- Senecioneae) is a Synotis and conspecific with S. otophylla based on evidence from morphology, cytology and ITS/ETS sequence data. Nordic Journal of Botany 32: 824–835. https://doi.org/10.1111/njb.00574
Tang, M., Ren, C. & Yang, Q.E. (2017) Reinstatement of the Sino-Himalayan species Senecio pentanthus (Asteraceae, Senecioneae). Phytotaxa 292: 253–261. https://doi.org/10.11646/phytotaxa.292.3.5
Tang, M. & Chen, Y.S. (2021) Blumea hunanensis is a synonym of Synotis nagensium (Asteraceae: Senecioneae). Phytotaxa 487 (2): 149–156. https://doi.org/10.11646/phytotaxa.487.2.5
Zhang, R., Liu, Y.L. & Tang, M. (2021) Four new synonyms in Synotis (Asteraceae, Senecioneae). Phytotaxa 483 (3): 255–266. https://doi.org/10.11646/phytotaxa.483.3.5