<documentid="95EE6AF5070FCA259A4EA3B377CF1319"ID-DOI="10.5852/ejt.2018.396"ID-GBIF-Dataset="2b95a851-e1bf-4bdd-9cce-441ddc4135d2"ID-ISSN="2118-9773"ID-Zenodo-Dep="3787049"IM.bibliography_approvedBy="diego"IM.illustrations_approvedBy="diego"IM.materialsCitations_approvedBy="diego"IM.metadata_approvedBy="diego"IM.tables_requiresApprovalFor="existingObjects,plazi"IM.taxonomicNames_approvedBy="diego"IM.treatmentCitations_approvedBy="diego"IM.treatments_approvedBy="diego"checkinTime="1588696404769"checkinUser="valdenar"docAuthor="Camfield, Rebecca & Hughes, Mark"docDate="2018"docId="0397A96F2F37FF8B03EDFD94E1602CBA"docLanguage="en"docName="ejt-396_camfield_hughes.pdf.imf"docOrigin="European Journal of Taxonomy 396"docStyle="DocumentStyle:EF2B578F1D15862ADE45B0C07C620911.14:EJT.2018-.journal_article.type1"docStyleId="EF2B578F1D15862ADE45B0C07C620911"docStyleName="EJT.2018-.journal_article.type1"docStyleVersion="14"docTitle="Begonia (sect. Sphenanthera) silletensis C. B. Clarke 1879"docType="treatment"docVersion="14"lastPageNumber="93"masterDocId="FFAED1172F6DFFD7025FFFB1E00A2E5C"masterDocTitle="A revision and one new species of Begonia L. (Begoniaceae, Cucurbitales) in Northeast India"masterLastPageNumber="116"masterPageNumber="1"pageNumber="91"updateTime="1737394282000"updateUser="diego">
<mods:titleid="186CA4227BAEACDE53DE8D77D50ABC52">A revision and one new species of Begonia L. (Begoniaceae, Cucurbitales) in Northeast India</mods:title>
<taxonomicNameid="4C3E63FA2F37FF8D03EDFD94E38D2C63"ID-CoL="L8GQ"authorityName="C. B. Clarke"authorityYear="1879"baseAuthorityName="A. DC."box="[434,903,549,576]"class="Magnoliopsida"family="Begoniaceae"genus="Begonia"kingdom="Plantae"order="Cucurbitales"pageId="90"pageNumber="91"phylum="Tracheophyta"rank="species"section="Sphenanthera"species="silletensis">
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<bibRefCitationid="EFAF65882F37FF8D0006FD3BE2FB2CF8"author="Clarke C. B."box="[601,753,650,676]"pageId="90"pageNumber="91"pagination="636 - 656"refId="ref53024"refString="Clarke C. B. 1879. Begoniaceae. In: Hooker J. D. (ed.) Flora of British India 2: 636 - 656. London."type="journal article"year="1879">Clarke 1879</bibRefCitation>
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<bibRefCitationid="EFAF65882F37FF8D03D5FCD2E2612D22"author="Clarke C. B."box="[394,619,867,894]"pageId="90"pageNumber="91"pagination="114 - 122"refId="ref53056"refString="Clarke C. B. 1881. On Indian Begonias. Journal of the Linnean Society, Botany 18: 114 - 122, pl. 1 - 3. Available from http: // biodiversitylibrary. org / page / 230642 [accessed May 2009]."type="journal article"year="1881">Clarke (1881: 115)</bibRefCitation>
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<bibRefCitationid="EFAF65882F37FF8D0028FCD2E37E2D22"author="Chauhan A. S."box="[631,884,867,894]"pageId="90"pageNumber="91"pagination="174 - 176"refId="ref52920"refString="Chauhan A. S. 1996. Begoniaceae. In: Hajra P. K. (ed.) Flora of Namdapha, Arunachal-Pradesh: 174 - 176. Botanical Survey of India, Calcutta."type="book chapter"year="1996">Chauhan (1996: 176)</bibRefCitation>
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<bibRefCitationid="EFAF65882F37FF8D0058FC37E2E32DFD"author="Khatun B. M. R."box="[519,745,902,929]"pageId="90"pageNumber="91"pagination="10"refId="ref55371"refString="Khatun B. M. R. 2008. Begoniaceae. In: Ahmed Z. U. Encyclopedia of Flora and Fauna of Bangladesh 7: Angiosperms: Dicotyledons: Balsaminaceae-Euphorbiaceae: 10. Asiatic Society of Bangladesh, Bangladesh."type="book chapter"year="2008">Khatun (2008: 13)</bibRefCitation>
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<bibRefCitationid="EFAF65882F37FF8D00A6FC37E3CB2DFD"author="Dash S. S."box="[761,961,902,929]"pageId="90"pageNumber="91"pagination="29 - 43"refId="ref53314"refString="Dash S. S. 2010. Native species of Begonia L. (Begoniaceae) in Arunachal-Pradesh-diversity and distribution. Bulletin of Arunachal Forest Research 26: 29 - 43."type="journal article"year="2010">Dash (2010: 40)</bibRefCitation>
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<bibRefCitationid="EFAF65882F37FF8D0778FC37E1532D99"author="Morris R."pageId="90"pageNumber="91"pagination="146 - 149"refId="ref56807"refString="Morris R. 2012 b. Begonia silletensis (A. DC.) C. B. Clarke. The Begonian 79: 146 - 149."type="journal article"year="2012">Morris (2012b: 146)</bibRefCitation>
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; as
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, asymmetric, upper surface green, very sparsely puberulous all over or on veins mostly near petiole attachment or glabrous, underside green, red puberulous all over, denser on veins, venation palmate, midrib
long; margin entire or with small teeth at ends of main veins, with sparse short hairs; apex short acuminate or acute. Inflorescence: cymose, terminal, few; peduncle with puberulous hairs, branching once; male primary
, white to pink, puberulous on reverse denser near base, inner tepals similar yet smaller; ovary 3–4-locular, placentae bifid; capsule globose, densely red tomentose, without wings; styles 3–4, convoluted with twisted ends, caduceus. Fruit: upright, globose; capsule spherical, 8–23 ×
<taxonomicNameid="4C3E63FA2F36FF8C0326FD82E2522C10"authorityName="C. B. Clarke"authorityYear="1879"baseAuthorityName="A. DC."box="[377,600,562,588]"class="Magnoliopsida"family="Begoniaceae"genus="Begonia"kingdom="Plantae"order="Cucurbitales"pageId="91"pageNumber="92"phylum="Tracheophyta"rank="species"species="silletensis">
, particularly the mountains of Arunachal-Pradesh and down into the Arakan mountain range. The species has been recorded near the Namphada Reserve and the Pakke Tiger Reserve.
<taxonomicNameid="4C3E63FA2F36FF8C01D4FC9EE4662D14"authorityName="C. B. Clarke"authorityYear="1879"baseAuthorityName="A. DC."box="[907,1132,814,840]"class="Magnoliopsida"family="Begoniaceae"genus="Begonia"kingdom="Plantae"order="Cucurbitales"pageId="91"pageNumber="92"phylum="Tracheophyta"rank="species"species="silletensis">
<bibRefCitationid="EFAF65882F36FF8C036EFCE3E2252D30"author="Tebbitt M. C. & Guan K. Y."box="[305,559,850,876]"pageId="91"pageNumber="92"pagination="133 - 136"refId="ref57656"refString="Tebbitt M. C. & Guan K. Y. 2002. Emended circumscription of Begonia silletensis (Begoniaceae) and description of a new subspecies from Yunnan, China. Novon 12: 133 - 136. https: // doi. org / 10.2307 / 3393252"type="journal article"year="2002">Tebbitt & Guan 2002</bibRefCitation>
;
<bibRefCitationid="EFAF65882F36FF8C0064FCE3E31C2D30"author="Dash S. S. & Mao A. A."box="[571,790,850,876]"pageId="91"pageNumber="92"pagination="2095 - 2099"refId="ref53346"refString="Dash S. S. & Mao A. A. 2011. Distribution of six little known plant species from Arunachal-Pradesh, India. Journal of Threatened Taxa 3 (9): 2095 - 2099. https: // doi. org / 10.11609 / jott. o 2688.2095 - 9"type="journal article"year="2011">Dash & Mao 2011</bibRefCitation>
;
<bibRefCitationid="EFAF65882F36FF8C017DFCE3E3C92D30"author="Morris R."box="[802,963,850,876]"pageId="91"pageNumber="92"pagination="89 - 93"refId="ref56705"refString="Morris R. 2011 c. Begonia aborensis Dunn. The Begonian 78: 89 - 93."type="journal article"year="2011">Morris 2011c</bibRefCitation>
,
<bibRefCitationid="EFAF65882F36FF8C0191FCE3E4162D31"author="Morris R."box="[974,1052,850,877]"pageId="91"pageNumber="92"pagination="146 - 149"refId="ref56807"refString="Morris R. 2012 b. Begonia silletensis (A. DC.) C. B. Clarke. The Begonian 79: 146 - 149."type="journal article"year="2012">2012b</bibRefCitation>
), however, close examination of specimens cited in
<bibRefCitationid="EFAF65882F36FF8C03E4FCC4E2CD2DD3"author="Tebbitt M. C. & Guan K. Y."box="[443,711,885,911]"pageId="91"pageNumber="92"pagination="133 - 136"refId="ref57656"refString="Tebbitt M. C. & Guan K. Y. 2002. Emended circumscription of Begonia silletensis (Begoniaceae) and description of a new subspecies from Yunnan, China. Novon 12: 133 - 136. https: // doi. org / 10.2307 / 3393252"type="journal article"year="2002">Tebbitt & Guan (2002)</bibRefCitation>
reveal some with short sparse pubescence, and one (
<taxonomicNameid="4C3E63FA2F36FF8C0338FC6EE1F62DA4"authorityName="C. B. Clarke"authorityYear="1879"baseAuthorityName="A. DC."box="[359,508,990,1016]"class="Magnoliopsida"family="Begoniaceae"genus="Begonia"kingdom="Plantae"order="Cucurbitales"pageId="91"pageNumber="92"phylum="Tracheophyta"rank="species"species="silletensis">
has soft short tomentose hairs along the veins on the lamina underside and petiole. The upper surface of the leaf looks glabrous at a glance, but with a hand lens or microscope small, sparsely spread hairs are often visible especially near the petiole attachment and along the veins. The same short tomentose pubescence is also found on the young ovaries but lost as the fruit ripens. The most reliable character for separating the two species is the longer peduncle in
<taxonomicNameid="4C3E63FA2F36FF8C0628FBDDE5042AD9"authorityName="C. B. Clarke"authorityYear="1879"baseAuthorityName="A. DC."box="[1143,1294,1131,1157]"class="Magnoliopsida"family="Begoniaceae"genus="Begonia"kingdom="Plantae"order="Cucurbitales"pageId="91"pageNumber="92"phylum="Tracheophyta"rank="species"species="silletensis">
. In this account it has been decided to leave them as separate but very closely related species. Further studies on good flowering material and possibly a genetic analysis would be useful to give insight into whether they could be considered as a single, variable taxon. The plant photographed in
<bibRefCitationid="EFAF65882F31FF8B0019FEC4E2FC2FD3"author="Morris R."box="[582,758,373,399]"pageId="92"pageNumber="93"pagination="89 - 93"refId="ref56705"refString="Morris R. 2011 c. Begonia aborensis Dunn. The Begonian 78: 89 - 93."type="journal article"year="2011">Morris (2011c)</bibRefCitation>
<taxonomicNameid="4C3E63FA2F31FF8B02E2FE28E1582FEE"authorityName="C. B. Clarke"authorityYear="1879"baseAuthorityName="A. DC."box="[189,338,408,434]"class="Magnoliopsida"family="Begoniaceae"genus="Begonia"kingdom="Plantae"order="Cucurbitales"pageId="92"pageNumber="93"phylum="Tracheophyta"rank="species"species="silletensis">
<taxonomicNameid="4C3E63FA2F36FF8C0026F87AE30429B9"authorityName="C. B. Clarke"authorityYear="1879"baseAuthorityName="A. DC."box="[633,782,1995,2021]"class="Magnoliopsida"family="Begoniaceae"genus="Begonia"kingdom="Plantae"order="Cucurbitales"pageId="91"pageNumber="92"phylum="Tracheophyta"rank="species"species="silletensis">
<bibRefCitationid="EFAF65882F31FF8B02E2FE68E17B2FA8"author="Morris R."box="[189,369,473,500]"pageId="92"pageNumber="93"pagination="146 - 149"refId="ref56807"refString="Morris R. 2012 b. Begonia silletensis (A. DC.) C. B. Clarke. The Begonian 79: 146 - 149."type="journal article"year="2012">Morris (2012b)</bibRefCitation>
<taxonomicNameid="4C3E63FA2F31FF8B035FFE4FE19D2C4B"authorityName="C. B. Clarke"authorityYear="1879"baseAuthorityName="A. DC."box="[256,407,509,535]"class="Magnoliopsida"family="Begoniaceae"genus="Begonia"kingdom="Plantae"order="Cucurbitales"pageId="92"pageNumber="93"phylum="Tracheophyta"rank="species"species="silletensis">
<taxonomicNameid="4C3E63FA2F31FF8B0282FDF5E17B2C01"authorityName="C. B. Clarke"authorityYear="1879"baseAuthorityName="A. DC."box="[221,369,579,605]"class="Magnoliopsida"family="Begoniaceae"genus="Begonia"kingdom="Plantae"order="Cucurbitales"pageId="92"pageNumber="93"phylum="Tracheophyta"rank="species"species="silletensis">
<taxonomicNameid="4C3E63FA2F31FF8B006BFD34E10E2C9E"authority="Tebbitt & K. Y. Guan (Tebbitt & Guan 2002)"authorityName="Tebbitt & K. Y. Guan (Tebbitt & Guan"authorityYear="2002"class="Magnoliopsida"family="Begoniaceae"genus="Begonia"kingdom="Plantae"order="Cucurbitales"pageId="92"pageNumber="93"phylum="Tracheophyta"rank="variety"species="silletensis"variety="mengyangensis">
<bibRefCitationid="EFAF65882F31FF8B06E3FD34E0F62C9E"author="Tebbitt M. C. & Guan K. Y."pageId="92"pageNumber="93"pagination="133 - 136"refId="ref57656"refString="Tebbitt M. C. & Guan K. Y. 2002. Emended circumscription of Begonia silletensis (Begoniaceae) and description of a new subspecies from Yunnan, China. Novon 12: 133 - 136. https: // doi. org / 10.2307 / 3393252"type="journal article"year="2002">Tebbitt & Guan 2002</bibRefCitation>