Abstract
We describe Begonia amparoi, a new species of Begonia section Baryandra from Linungaw Twin Islands, Mindanao, Philippines. It grows on limestone and has a robust habit, with a thick rhizome and large leaves. Begonia amparoi is currently known only from the type locality in a coastal island forest of Tandag City, Province of Surigao del Sur. Based on IUCN red list criteria, B. amparoi is considered Vulnerable (VU).
References
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<p>Hughes, M., Moonlight, P., Jara, A., Tebbitt, M. & Pullan, M. (2015–) <em>Begonia </em>Resource Center. Online database available from http://padme.rbge.org.uk/begonia/ [Accessed 31 May 2022]</p>
<p>IUCN Standards & Petitions Committee. (2019) <em>Guidelines for Using the IUCN Red List Categories and Criteria. Version 14</em>. Prepared by the Standards and Petitions Committee.</p>
<p>Klotzsch, J.F. (1854) Begoniaceen-Gattungen und Arten. <em>Abhandlungen der Koniglichen</em> <em>Akademie der Wissenschaften zu Berlin</em> 194–243.</p>
<p>Linnaeus, C. (1753) <em>Species Plantarum</em>. Vol 2. Laurentius Salvius, Stockholm.</p>
<p>Mazo, K.R.M. & Rubite, R.R. (2022) Two new species of <em>Begonia </em>(section <em>Petermannia</em>, Begoniaceae) from the Zamboanga Peninsula, Philippines and a redescription of <em>Begonia parvilimba. Phytotaxa</em> 538 (2): 163–171. https://doi.org/10.11646/phytotaxa.538.2.9</p>
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<p>Rubite, R.R., Hughes, M., Alejandro, G.J.D. & Peng, C.-I (2013) Recircumscription of <em>Begonia</em> sect<em>. Baryandra </em>(Begoniaceae): evidence from molecular data. <em>Botanical Studies </em>54: 58. https://doi.org/10.1186/1999-3110-54-38</p>
<p>Rubite, R.R., Brillantes, R.Y., Tandang, D.N., Moran, C.B., Rule, M.G.Q. & Lin, C.W. (2021a) <em>Begonia benitotanii </em>(section <em>Petermannia, </em>Begoniaceae) a new species endemic to the Philippine Island of Bucas Grande. <em>Phytotaxa </em>513 (3): 257–264. https://doi.org/10.11646/phytotaxa.513.3.5</p>
<p>Rubite, R.R., Justo, C.A.D.G., Villaseñor, P.C., Angeles, M.D.D., Tandang, D.N. & Lin, C.W. (2021b) Three new species of <em>Begonia </em>(section <em>Baryandra, </em>Begoniaceae) from Samar Island, the Philippines. <em>Phytotaxa </em>516 (3): 263–274. https://doi.org/10.11646/phytotaxa.516.3.5</p>
<p>Rule, M.G.Q., Ang, Y.P., Rubite, R.R., Docot, R.V.A., Bustamante, R.A.A. & Robinson, A.S. (2020) <em>Begonia makuruyot </em>(Begoniaceae, section <em>Baryandra</em>) a new species from Surigao del Norte Province, Philippines. <em>Phytotaxa</em> 470 (3): 226–234. https://doi.org/10.11646/phytotaxa.470.3.2</p>
<p>Warburg, O. (1904) Begoniceae. <em>In</em>: Perkins, J.R. (Ed.) <em>Fragmenta Florae Philippinae. </em>Gebruder Borntraeger, Leipzig, pp. 51–56.</p>
<p>De Candolle, A. (1859) Memoire Sur La Famille Des Begonias. <em>Annales des Sciences</em> <em>Naturalles; Botanique</em> 11: 122–134.</p>
<p>Hughes, M., Moonlight, P., Jara, A., Tebbitt, M. & Pullan, M. (2015–) <em>Begonia </em>Resource Center. Online database available from http://padme.rbge.org.uk/begonia/ [Accessed 31 May 2022]</p>
<p>IUCN Standards & Petitions Committee. (2019) <em>Guidelines for Using the IUCN Red List Categories and Criteria. Version 14</em>. Prepared by the Standards and Petitions Committee.</p>
<p>Klotzsch, J.F. (1854) Begoniaceen-Gattungen und Arten. <em>Abhandlungen der Koniglichen</em> <em>Akademie der Wissenschaften zu Berlin</em> 194–243.</p>
<p>Linnaeus, C. (1753) <em>Species Plantarum</em>. Vol 2. Laurentius Salvius, Stockholm.</p>
<p>Mazo, K.R.M. & Rubite, R.R. (2022) Two new species of <em>Begonia </em>(section <em>Petermannia</em>, Begoniaceae) from the Zamboanga Peninsula, Philippines and a redescription of <em>Begonia parvilimba. Phytotaxa</em> 538 (2): 163–171. https://doi.org/10.11646/phytotaxa.538.2.9</p>
<p>Merrill, E.D. (1912 [1911]) The Philippine species of <em>Begonia. Philippine Journal of Science, </em>section C, Botany 6: 369–406.</p>
<p>Rubite, R.R. (2013) <em>Begonia </em>section<em> Petermannia</em> of Luzon Island, Philippines. <em>Philippine Journal of Science</em> 142: 183–197.</p>
<p>Rubite, R.R., Hughes, M., Alejandro, G.J.D. & Peng, C.-I (2013) Recircumscription of <em>Begonia</em> sect<em>. Baryandra </em>(Begoniaceae): evidence from molecular data. <em>Botanical Studies </em>54: 58. https://doi.org/10.1186/1999-3110-54-38</p>
<p>Rubite, R.R., Brillantes, R.Y., Tandang, D.N., Moran, C.B., Rule, M.G.Q. & Lin, C.W. (2021a) <em>Begonia benitotanii </em>(section <em>Petermannia, </em>Begoniaceae) a new species endemic to the Philippine Island of Bucas Grande. <em>Phytotaxa </em>513 (3): 257–264. https://doi.org/10.11646/phytotaxa.513.3.5</p>
<p>Rubite, R.R., Justo, C.A.D.G., Villaseñor, P.C., Angeles, M.D.D., Tandang, D.N. & Lin, C.W. (2021b) Three new species of <em>Begonia </em>(section <em>Baryandra, </em>Begoniaceae) from Samar Island, the Philippines. <em>Phytotaxa </em>516 (3): 263–274. https://doi.org/10.11646/phytotaxa.516.3.5</p>
<p>Rule, M.G.Q., Ang, Y.P., Rubite, R.R., Docot, R.V.A., Bustamante, R.A.A. & Robinson, A.S. (2020) <em>Begonia makuruyot </em>(Begoniaceae, section <em>Baryandra</em>) a new species from Surigao del Norte Province, Philippines. <em>Phytotaxa</em> 470 (3): 226–234. https://doi.org/10.11646/phytotaxa.470.3.2</p>
<p>Warburg, O. (1904) Begoniceae. <em>In</em>: Perkins, J.R. (Ed.) <em>Fragmenta Florae Philippinae. </em>Gebruder Borntraeger, Leipzig, pp. 51–56.</p>