Saxifraga sunhangiana (Saxifragaceae), a new species from Gansu, China

10.6165/tai.2022.67.195

Xin-Jian ZHANG；Tian-hui KUANG；Jun-Tong CHEN；Li-Juan LI；Jing-Yi PENG；Kailang GUAN；Xian-Han HUANG；Heng-Chang WANG；Tao DENG

Irregulares ； ITS sequences ； Saxifraga fortune ； S. rufescens ； taxonomy ； phylogeny

TAIWANIA

67卷2期（2022 / 06 / 01）

195 - 200

英文

Saxifraga sunhangiana, a new species of the genus Saxifraga sect. Irregulares (Saxifragaceae) from Gansu, China, is described and illustrated. This species is distinguishable by its abaxial leaf surface with singularly long white villous hairs and rather long rhizomes. Morphological and molecular data indicate that S. sunhangiana belongs to S. sect. Irregulares, and closely related to S. rufescens. The new species differs from S. rufescens by its terminal flower with two elongated, fusiform-lanceolate petals and leaves with glabrous petiole.

1. Chen, Y.S., T. Deng, Z. Zhou and H. Sun. 2018. Is the east Asian flora ancient or not? Natl. Sci. Rev. 5(6): 920–932.
   連結：
2. Deng, J., B.T. Drew, E.V. Mavrodiev, M.A. Gitzendanner, P.S. Soltis and E.D. Soltis. 2015. Phylogeny, divergence times, and historical biogeography of the angiosperm family Saxifragaceae. Mol. Phylogenetics Evol. 83: 86–98.
   連結：
3. Gornall, R.J. 1987. An outline of a revised classification of Saxifraga L. Bot. J. Linn. Soc. 95(4): 273–292.
   連結：
4. Guindon, S., J.F. Dufayard, V. Lefort, M. Anisimova, W. Hordijk and O. Gascuel. 2010. New algorithms and methods to estimate maximum-likelihood phylogenies: accessing the performance of PhyML 3.0. Syst. Biol. 59(3): 207–221.
   連結：
5. Huelsenbeck, J.P. and F. Ronquist. 2001. MRBAYES: Bayesian inference of phylogenetic trees. Bioinformatics 17(8): 754–755.
   連結：
6. Magota, K., S. Sakaguchi, J.S. Lee, M. Yamamoto, D. Takahashi, A.J. Nagano and H. Setoguchi. 2021. Phylogeographic analysis of Saxifraga fortunei complex (Saxifragaceae) reveals multiple origins of morphological and ecological variations in the Japanese Archipelago. Mol. Phylogenetics Evol. 163:107230.
   連結：
7. Posada, D. 2008. JModeltest: phylogenetic model averaging. Mol. Biol. Evol. 25(7): 1253.
   連結：
8. Prieto, J.A.F., J.M. Arjona, M. Sanna, R. Pérez and E. Cires. 2013. Phylogeny and systematics of Micranthes (Saxifragaceae): An appraisal in European territories. J. Plant Res. 126(5): 605–611.
   連結：
9. Soltis, D.E., R.K. Kuzoff, E. Conti, R. Gornall and K. Ferguson. 1996. matK and rbcL gene sequence data indicate that Saxifraga (Saxifragaceae) is polyphyletic. Am. J. Bot. 83(3): 371–382.
   連結：
10. Soltis, D.E., R.K. Kuzoff, M.E. Mort, M. Zanis, M. Fishbein, L. Hufford, J. Koontz and M.K. Arroyo. 2001. Elucidating deep-level phylogenetic relationships in Saxifragaceae using sequences for six chloroplastic and nuclear DNA regions. Ann. Mo. Bot. Gard. 88(4): 669–693.
    連結：
11. Sudhir, K., S. Glen and T. Koichiro. 2016. MEGA7: Molecular Evolutionary Genetics Analysis Version 7.0 for Bigger Datasets. Mol. Biol. Evol. 33(7): 1870–1874.
    連結：
12. Sun, H., J.W. Zhang, T. Deng and D.E. Boufford. 2017. Origins and evolution of plant diversity in the Hengduan Mountains, China. Plant Diver. 39(4): 161–166.
    連結：
13. Tkach, N., M. Röser and M.H. Hoffmann. 2015a. Molecular phylogenetics, character evolution and systematics of the genus Micranthes (Saxifragaceae). Bot. J. Linn. Soc. 178(1): 47–66.
    連結：
14. Tkach, N., M. Röser, G. Miehe, A.N. Muellner-Riehl, J. Ebersbach, A. Favre and M.H. Hoffmann. 2015b. Molecular phylogenetics, morphology and a revised classification of the complex genus Saxifraga (Saxifragaceae). Taxon 64(6): 1159–1187.
    連結：
15. Wang, G.F., Y.S. Ye and F.W. Xing. 2008. Saxifraga daqiaoensis (Saxifragaceae), a new species from Guangdong, China. Ann. Bot. Fenn. 45(3): 237–239.
    連結：
16. Zhang, J.J., W.Y. Zhao, K.K. Meng, W.B. Liao, L. Wang and S.F. Chen. 2019. Saxifraga shennongii, a new species of Saxifragaceae from Hunan Province, China. Phytotaxa 418(1): 79–88.
    連結：
17. Zhang, M.H., C.Y. Wang, C. Zhang, D.G. Zhang, K.G. Li, Z.L. Nie and Y. Meng. 2020. Phylogenetic relationships and biogeographic history of the unique Saxifraga sect. Irregulares (Saxifragaceae) from eastern Asia. J. Syst. Evol. 58(6): 958–971.
    連結：
18. Zhang, M.H., X.S. Zhang, Z.L. Nie, D.G. Zhang and Y. Meng. 2017. Saxifraga kegangii (Saxifragaceae), a new species from Hunan Province of central China. Phytotaxa 309(2): 159–165.
    連結：
19. Zhang, X.J., Q.S. Fu, J.T. Chen, L.J. Li, P.R. Luo, J.Y. Peng, X.H. Huang, H. Sun and T. Deng. 2021. Saxifraga viridiflora (Saxifragaceae), an unusual new species from Guangxi, China. Phytokeys 184: 19–26.
    連結：
20. Zhang, X.J., Z.C. Liu, K.K. Meng, Q.L. Ding, L. Wang and W.B. Liao. 2018. Saxifraga luoxiaoensis (Saxifragaceae), a new species from Hunnan and Jaingxi, China. Phytotaxa 350(3): 291–296.
    連結：
21. Zhang, Z.X., S.L. Chen and R.J. Gornall. 2015. Morphology and anatomy of the exine in Saxifraga (Saxifragaceae). Phytotaxa 212(2): 105–132.
    連結：
22. Zhao, W.Y., K.K. Meng, Q. Fan, J.H. Jin and W.B. Liao. 2019. Saxifraga damingshanensis (S. sect. Irregulares, Saxifragaceae), a new species from Guangxi, China. PhytoKeys 133: 95–103.
    連結：
23. Haworth, A.H. 1803. Miscellanea naturalia: Sive dissertationes variæ ad historiam naturalem spectantes. Londini: Typis J. Taylor., 155 pp.
24. Pan, J.T., C.Z. Gu, S.M. Huang, Z.F. Wei, S.Y. Jin, L.D. Lu, S. Akiyama, C. Alexander, B. Bartholomew, J. Cullen, R.J. Gornall, U.M. Hultgård, H. Ohba and D.E. Soltis. 2001. Saxifragaceae. In: Wu ZY, Raven PH, Hong DY (Eds) Flora of China, vol. 8. Science Press, Beijing and Missouri Botanical Garden Press, St. Louis, 269–452. http://foc.eflora.cn/content.aspx?TaxonId=10800
25. Thiers, B. 2018. Index Herbariorum: a global directory of public herbaria and associated staff. The Bronx: New York Botanical Garden Virtual Herbarium.
26. White, T.J., T. Bruns, S. Lee and J. Taylor. 1990. Amplification and direct sequencing of fugal ribosomal RNA genes for phylogenetics. In Innis M, Gelfand D, Sninsky J, White T (Eds) PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, 315–322.

1. Hai-Ling CHEN;Wei-Bin XU;Wan-Yi ZHAO;Yan LIU(2022)。Morphological and molecular identification for Saxifraga yangshuoensis (sect. Irregulares, Saxifragaceae), a new species from Guangxi, China。TAIWANIA。67(4)。603-608。