Abstract
We present a taxonomic synopsis for the ten species of Magnoliaceae from Honduras with a key and distribution map for the recognised species. Five new species and one new subspecies of Magnolia sect. Magnolia are described and illustrated: M. celaquensis, M. cusucoensis, M. darioi, M. pastorcortesii, M. picopijolensis, and M. sororum subsp. oligocarpa. The rediscovery of M. atlantida is confirmed after more than eight decades since its discovery in Atlántida, Honduras. The conservation status of each species is evaluated: one is considered least concern (LC), one vulnerable (VU), two endangered (EN) and six critically endangered (CR).
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Dandy, J.E. (1927) The genera of Magnolieae. <em>Bulletin of Miscellaneous Information </em>7: 257–264. https://doi.org/10.2307/4107601</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Dandy, J.E. (1930) A new magnolia from Honduras. <em>Journal of Botany</em> 68: 146–147.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Don, D. (1824)<em> A description of the genus Pinus</em>, ed. 2: 20. White, London, 58 pp.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Don, G. (1831) Magnoliaceae. <em>In:</em> <em>A general history of the dichlamydeous plants</em> 1. Rivington, London, pp. 78–86. </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Donnell Smith, J. (1897) Undescribed plants from Guatemala and other Central American Republics XIX. <em>Botanical Gazette</em> 24: 395. https://doi.org/10.1086/327610</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Donnell Smith, J. (1893) Undescribed plants from Guatemala XI. <em>Botanical Gazette</em> 18: 205. https://doi.org/10.1086/326937</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Donnell Smith, J. (1909) Undescribed plants from Guatemala and other Central American Republics. <em>Botanical Gazette</em> 47: 253–261. https://doi.org/10.1086/329872</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Figlar, R.B. & Nooteboom, H.P. (2004) Notes on Magnoliaceae IV. <em>Blumea</em> 49: 87–100. https://doi.org/10.3767/000651904X486214</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Frodin, D.G. & Govaerts, R.H.A. (1996) <em>World checklist and bibliography of Magnoliaceae</em>. Kew Publishing, Richmond, 79 pp. </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;">Linnaeus, C. (1753) <em>Species plantarum</em> 1. Salvius, Stockholm, 560 pp. </span></span></span></p>
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