Abstract
A new species of Madhuca from Thailand, M. kanchanaburiensis is described and illustrated. The species appears most similar to M. malaccensis and M. punctata, but differs in having conspicuous secondary veins toward the leaf margin, woolly filaments and longer corolla. The vernacular name and conservational status of this endemic species are also provided.
References
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Bachman, S., Moat, J., Hill, A., de la Torre, J. & Scott, B. (2011) Supporting Red List threat assessmentswith GeoCAT: Geospatial Conservation Assessment Tool. </span><em>ZooKeys</em> 150: 117–126. https://doi.org/10.3897/zookeys.150.2109</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Chantaranothai, P. (1998) Four new species of <em>Madhuca</em> (Sapotaceae) from Thailand. <em>Nordic Journal of Botany</em> 18: 493–497. https://doi.org/10.1111/j.1756-1051.1998.tb01527.x</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Chantaranothai, P. (2014) Sapotaceae. <em>In:</em> Santisuk, T. & Balslev, H. (eds.) <em>Flora of Thailand</em> 11 (4). The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok, pp. 610–655.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Clarke, C.B. (1882) Sapotaceae. <em>In:</em> Hooker, J.D. (ed.) <em>Flora of British India</em> vol. 3. L.Reeve & Co., London, pp. 534–549.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Fletcher, H.R. (1937) Contributions to the Flora of Siam: Additamentum XLIV. <em>Bulletin of miscellaneous information (Royal Botanic Gardens, Kew)</em> 1937 (7): 371–392. https://doi.org/10.2307/4107174</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Gmelin, J.F. (1791) <em>Systema Naturae tom. II pars. I</em>. Impensis Georg. Emanuel. Beer, Lipsiae, pp. 1–884.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Gautier, L., Naciri, Y., Anderberg, A.A., Smedmark, J.E.E, Randrianaivo, R. & Swenson, U. (2013) A new species, genus and tribe of Sapotaceae, endemic to Madagascar. <em>Taxon</em> 62: 972–983. https://doi.org/10.12705/625.17</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">IUCN Standards and Petitions Committee (2019) <em>Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. </em>Prepared by the Standards and Petitions Committee. Downloadable from: http://www.iucnredlist.org/documents/RedList<br>Guidelines.pdf (Accessed 22 February 2022).</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Kunasit, P. & Chantaranothai, P. (2022) Pollen morphology of the Sapotaceae from Thailand and its taxonomic implications. <em>Thai Forest Bulletin (Botany)</em> 50 (2): 120–134. https://doi.org/10.20531/tfb.2022.50.2.12</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lam, H.J. (1925) The Sapotaceae, Sarcospermaceae and Boerlagellaceae of the Dutch East Indies and surrounding country. <em>Bulletin du Jardin Botanique de Buitenzorg ser. III</em> 7: 1–289.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Omar, N., Chantaranothai, P. & Latiff, A. (2015) Two new <em>Madhuca </em>species (Sapotaceae) from Peninsular Malaysia. <em>Malayan Nature Journal</em> 67 (3): 342–348.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Richardson, J.E., Bakar, A.M., Tosh, J., Armstrong, K., Smedmark, J., Anderberg, A.A., Slik, F. & Wilkie, P. (2013) The influence of tectonics, sea-level changes and dispersal on migration and diversification of Isonandreae (Sapotaceae). <em>Botanical Journal of the Linnean Society</em> 174 (1): 130–140. https://doi.org/10.1111/boj.12108</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Royen, P. van. (1960) Revision of the Sapotaceae of the Malaysian area in a wider sense. XX. <em>Madhuca </em>Gmelin. <em>Blumea</em> 10: 1–117.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smedmark, J.E., Swenson, U. & Anderberg, A.A. (2006) Accounting for variation of substitution rates through time in Bayesian phylogeny reconstruction of Sapotoideae (Sapotaceae). <em>Molecular Phylogenetics and Evolution</em> 39: 706–721. https://doi.org/10.1016/j.ympev.2006.01.018</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Swenson, U. & Anderberg, A.A. (2005) Phylogeny, character evolution, and classification of Sapotaceae (Ericales). <em>Cladistics</em> 21: 101–130. https://doi.org/10.1111/j.1096-0031.2005.00056.x</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Thiers, B. (2022 [continuously updated]) <em>Index Herbariorum: a global directory of public herbaria and associated staff. </em>The New York Botanical Garden. Available from: http://sweetgum.nybg.org/ih/ (Accessed 22 February 2022).</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Chantaranothai, P. (1998) Four new species of <em>Madhuca</em> (Sapotaceae) from Thailand. <em>Nordic Journal of Botany</em> 18: 493–497. https://doi.org/10.1111/j.1756-1051.1998.tb01527.x</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Chantaranothai, P. (2014) Sapotaceae. <em>In:</em> Santisuk, T. & Balslev, H. (eds.) <em>Flora of Thailand</em> 11 (4). The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok, pp. 610–655.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Clarke, C.B. (1882) Sapotaceae. <em>In:</em> Hooker, J.D. (ed.) <em>Flora of British India</em> vol. 3. L.Reeve & Co., London, pp. 534–549.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Fletcher, H.R. (1937) Contributions to the Flora of Siam: Additamentum XLIV. <em>Bulletin of miscellaneous information (Royal Botanic Gardens, Kew)</em> 1937 (7): 371–392. https://doi.org/10.2307/4107174</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Gmelin, J.F. (1791) <em>Systema Naturae tom. II pars. I</em>. Impensis Georg. Emanuel. Beer, Lipsiae, pp. 1–884.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Gautier, L., Naciri, Y., Anderberg, A.A., Smedmark, J.E.E, Randrianaivo, R. & Swenson, U. (2013) A new species, genus and tribe of Sapotaceae, endemic to Madagascar. <em>Taxon</em> 62: 972–983. https://doi.org/10.12705/625.17</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">IUCN Standards and Petitions Committee (2019) <em>Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. </em>Prepared by the Standards and Petitions Committee. Downloadable from: http://www.iucnredlist.org/documents/RedList<br>Guidelines.pdf (Accessed 22 February 2022).</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Kunasit, P. & Chantaranothai, P. (2022) Pollen morphology of the Sapotaceae from Thailand and its taxonomic implications. <em>Thai Forest Bulletin (Botany)</em> 50 (2): 120–134. https://doi.org/10.20531/tfb.2022.50.2.12</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lam, H.J. (1925) The Sapotaceae, Sarcospermaceae and Boerlagellaceae of the Dutch East Indies and surrounding country. <em>Bulletin du Jardin Botanique de Buitenzorg ser. III</em> 7: 1–289.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Omar, N., Chantaranothai, P. & Latiff, A. (2015) Two new <em>Madhuca </em>species (Sapotaceae) from Peninsular Malaysia. <em>Malayan Nature Journal</em> 67 (3): 342–348.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Richardson, J.E., Bakar, A.M., Tosh, J., Armstrong, K., Smedmark, J., Anderberg, A.A., Slik, F. & Wilkie, P. (2013) The influence of tectonics, sea-level changes and dispersal on migration and diversification of Isonandreae (Sapotaceae). <em>Botanical Journal of the Linnean Society</em> 174 (1): 130–140. https://doi.org/10.1111/boj.12108</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Royen, P. van. (1960) Revision of the Sapotaceae of the Malaysian area in a wider sense. XX. <em>Madhuca </em>Gmelin. <em>Blumea</em> 10: 1–117.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Smedmark, J.E., Swenson, U. & Anderberg, A.A. (2006) Accounting for variation of substitution rates through time in Bayesian phylogeny reconstruction of Sapotoideae (Sapotaceae). <em>Molecular Phylogenetics and Evolution</em> 39: 706–721. https://doi.org/10.1016/j.ympev.2006.01.018</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Swenson, U. & Anderberg, A.A. (2005) Phylogeny, character evolution, and classification of Sapotaceae (Ericales). <em>Cladistics</em> 21: 101–130. https://doi.org/10.1111/j.1096-0031.2005.00056.x</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Thiers, B. (2022 [continuously updated]) <em>Index Herbariorum: a global directory of public herbaria and associated staff. </em>The New York Botanical Garden. Available from: http://sweetgum.nybg.org/ih/ (Accessed 22 February 2022).</span></span></span></p>