Abstract
Asarum wannanense Lu Q. Huang & H. S. Peng, a new species from southern Anhui, eastern China, is described and illustrated. This new species is similar to A. magnificum Tsiang ex C. Y. Cheng et C. S. Yang, but the prominent morphological difference lies in the special calyx tube. The calyx tube of A. wannanense is constricted at the middle and upper part, with an orifice ring of ca. 4 mm wide. The orifice ring and the floral opening have elongated into a secondary calyx tube, with transversely corrugate characteristics.
References
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cheng, M.E., Peng, H.S., Wang, D.Q. & Huang, L.Q. (2018) Corydalis<em> huangshanensis</em> (Fumariaceae), a new species from Anhui, China. <em>Nordic Journal of Botany</em> 36: e01960. https://doi.org/10.1111/njb.01960 </span></span></span></p>
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Huang, S.M., Lawrence, M.K. & Michael, G.G. (2003) <em>Aristolochiaceae. In</em>: Wu, Z.Y. & Peter, R.H. (Eds.) <em>Flora of China.</em> <em>Vol</em>. <em>5</em>. Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, pp. 246–269.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Kelly, L.M. (2001) Taxonomy of <em>Asarum </em>section <em>Asarum </em>(Aristolochiaceae). <em>Systematic Botany </em>26: 17–53. http://dx.doi.org/10.1043/0363-6445-26.1.17</span></span></span></p>
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lu, C.T., Chiou, W.L. & Wang, J.C. (2013) <em>Asarum pubitessellatum</em>, sp. nov. (sect. Heterotropa, Aristolochiaceae) from Taiwan based on morphological and palynological evidence. <em>Botanical Studies</em> 54: 28. https://doi.org/10.1186/1999-3110-54-28</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lu, C.T. & Wang, J.C. (2014) <em>Asarum ampulliflorum </em>(Aristolochiaceae), a new species from Taiwan.<em> Phytotaxa </em>184: 46–52. https://doi.org/10.11646/phytotaxa.184.1.5</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Maekawa, F. (1953) <em>Geotaenium</em>. <em>VII Pacific Science Congress, Proceedings</em> 5: 217.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Schmidt, O.C. (1935) <em>Aristolochiaceae</em>. <em>In</em> Engler, A. & Prantl, K. (eds.) Die naturlichen Pflanzenfamilien, ed. 2, Vol. 16b, pp. 204–242.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Sinn, B.T., Kelly, L.M. & Freudenstein, J.V. (2015) Phylogenetic relationships in <em>Asarum</em>: partitioning-dependent topologies and a revised classification. <em>American Journal of Botany </em>102: 765–779. https://doi.org/10.3732/ajb.1400316</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Wang, D.Q. & Hwang, S.H. (1989) Medicinal plants of Anhui Province. <em>China Journal of Chinese Materia Medica</em> 14: 6–8.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Wang, Y., Wang, Q.F., Gituru, W.R. & Guo, Y.H. (2004) A New Species of <em>Asarum</em> (Aristolochiaceae) from China. <em>NOVON</em> 14: 239–241. </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Yin, M.Z., Peng, H.S. & Huang, L.Q. (2021) <em>Aconitum anhuiense </em>sp. nov. (Ranunculaceae), a new species from Anhui, China. <em>Nordic Journal of Botany</em> 36: e01960. https://doi.org/10.1111/njb.03413</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Braun, A. (1861) <em>Index seminum Horti Botanici Berolinensis.</em> Appendix. Plantarum novarum et minus cognitarum, quae in Horto Regio Botanico, Berolinensi coluntum. Berlin.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cheng, C.Y. & Yang, C.S. (1983) A synopsis of the Chinese species of <em>Asarum </em>(Aristolochiaceae). <em>Journal of the Arnold Arboretum </em>64: 565–597. https://doi.org/10.5962/p.185908</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Cheng, M.E., Peng, H.S., Wang, D.Q. & Huang, L.Q. (2018) Corydalis<em> huangshanensis</em> (Fumariaceae), a new species from Anhui, China. <em>Nordic Journal of Botany</em> 36: e01960. https://doi.org/10.1111/njb.01960 </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Chu, S.S., Wang, D.Q., Peng, H.S. & Huang, L.Q. (2020) <em>Peucedanum huangshanense </em>(Apiaceae), a new species from Anhui, China. <em>Phytotaxa</em> 430: 17–24. https://doi.org/10.11646/phytotaxa.430.1.3</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Huang, S.M., Lawrence, M.K. & Michael, G.G. (2003) <em>Aristolochiaceae. In</em>: Wu, Z.Y. & Peter, R.H. (Eds.) <em>Flora of China.</em> <em>Vol</em>. <em>5</em>. Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, pp. 246–269.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Kelly, L.M. (2001) Taxonomy of <em>Asarum </em>section <em>Asarum </em>(Aristolochiaceae). <em>Systematic Botany </em>26: 17–53. http://dx.doi.org/10.1043/0363-6445-26.1.17</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus, C. (1753) <em>Species Plantarum</em>. Laurentius salvius, Stockholm, pp. 422.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lu, C.T., Chiou, W.L. & Wang, J.C. (2013) <em>Asarum pubitessellatum</em>, sp. nov. (sect. Heterotropa, Aristolochiaceae) from Taiwan based on morphological and palynological evidence. <em>Botanical Studies</em> 54: 28. https://doi.org/10.1186/1999-3110-54-28</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lu, C.T. & Wang, J.C. (2014) <em>Asarum ampulliflorum </em>(Aristolochiaceae), a new species from Taiwan.<em> Phytotaxa </em>184: 46–52. https://doi.org/10.11646/phytotaxa.184.1.5</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Maekawa, F. (1953) <em>Geotaenium</em>. <em>VII Pacific Science Congress, Proceedings</em> 5: 217.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Schmidt, O.C. (1935) <em>Aristolochiaceae</em>. <em>In</em> Engler, A. & Prantl, K. (eds.) Die naturlichen Pflanzenfamilien, ed. 2, Vol. 16b, pp. 204–242.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Sinn, B.T., Kelly, L.M. & Freudenstein, J.V. (2015) Phylogenetic relationships in <em>Asarum</em>: partitioning-dependent topologies and a revised classification. <em>American Journal of Botany </em>102: 765–779. https://doi.org/10.3732/ajb.1400316</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Wang, D.Q. & Hwang, S.H. (1989) Medicinal plants of Anhui Province. <em>China Journal of Chinese Materia Medica</em> 14: 6–8.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Wang, Y., Wang, Q.F., Gituru, W.R. & Guo, Y.H. (2004) A New Species of <em>Asarum</em> (Aristolochiaceae) from China. <em>NOVON</em> 14: 239–241. </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Yin, M.Z., Peng, H.S. & Huang, L.Q. (2021) <em>Aconitum anhuiense </em>sp. nov. (Ranunculaceae), a new species from Anhui, China. <em>Nordic Journal of Botany</em> 36: e01960. https://doi.org/10.1111/njb.03413</span></span></span></p>