<documentid="609E473A3AA6E626E4E23172CA9AA304"ID-DOI="10.11646/phytotaxa.380.1.1"ID-ISSN="1179-3163"ID-Zenodo-Dep="13726686"IM.bibliography_approvedBy="felipe"IM.illustrations_approvedBy="felipe"IM.materialsCitations_approvedBy="felipe"IM.metadata_approvedBy="felipe"IM.taxonomicNames_approvedBy="felipe"IM.treatmentCitations_approvedBy="felipe"IM.treatments_approvedBy="felipe"checkinTime="1725676257647"checkinUser="felipe"docAuthor="Santos, Matheus F., Lucas, Eve & Sano, Paulo T."docDate="2018"docId="03F887C9FFEAFF8CFF45FBDCFB91F7AB"docLanguage="en"docName="phytotaxa.380.1.1.pdf"docOrigin="Phytotaxa 380 (1)"docSource="http://dx.doi.org/10.11646/phytotaxa.380.1.1"docStyle="DocumentStyle:F08184CE06D8A97EA3E6DE35D99648B0.4:Phytotaxa.2014-.monograph"docStyleId="F08184CE06D8A97EA3E6DE35D99648B0"docStyleName="Phytotaxa.2014-.monograph"docStyleVersion="4"docTitle="Myrcia attenuata M. F. Santos 2015"docType="treatment"docVersion="2"lastPageNumber="450"masterDocId="FFC1FFB1FFFDFF95FFCDFFDCFF8FFF8F"masterDocTitle="A taxonomic monograph of Myrcia sect. Sympodiomyrcia (Myrteae, Myrtaceae)"masterLastPageNumber="450"masterPageNumber="448"pageNumber="448"updateTime="1725689429345"updateUser="ExternalLinkService">
<mods:affiliationid="57968214BB1334FB7ED1DFDE90AC8565">Universidade Federal de São Carlos, Campus Sorocaba, Departamento de Biologia, Rod. João Leme dos Santos (SP 264), km 110, 18052 - 780, Sorocaba-SP, Brazil & Corresponding author: matheus _ fs @ ufscar. br, matheus _ fs @ yahoo. com. br</mods:affiliation>
<mods:namePartid="386CC9F4CC9CF8588C617100EE1E6F8A">Sano, Paulo T.</mods:namePart>
<mods:affiliationid="03304630FE0D7FC9E941632E402C7570">Universidade Federal de São Carlos, Campus Sorocaba, Departamento de Biologia, Rod. João Leme dos Santos (SP 264), km 110, 18052 - 780, Sorocaba-SP, Brazil & Universidade de São Paulo, Departamento de Botânica, Laboratório de Sistemática Vegetal, Rua do Matão 277, São Paulo, SP 05508 - 090, Brazil. & Universidade Federal de São Carlos, Campus Sorocaba, Departamento de Biologia, Rod. João Leme dos Santos (SP 264), km 110, 18052 - 780, Sorocaba-SP, Brazil</mods:affiliation>
<taxonomicNameid="4C514D5CFFEAFF82FF69FC22FD08FB96"ID-CoL="456VX"authority="M. F. Santos (2015 a: 163)"authorityName="M. F. Santos"authorityPageNumber="163"authorityYear="2015"box="[164,647,1022,1049]"class="Magnoliopsida"family="Myrtaceae"genus="Myrcia"kingdom="Plantae"order="Myrtales"pageId="23"phylum="Tracheophyta"rank="species"species="attenuata">
<bibRefCitationid="EFC04B2EFFEAFF82FE6EFBDCFD08FB96"author="Santos, M. F. & Lucas, E. & Sano, P. T."box="[419,647,1024,1049]"pageId="23"pagination="159 - 171"refId="ref72496"refString="Santos, M. F., Lucas, E. & Sano, P. T. (2015 a) Five new South American species of Myrcia s. l. (Myrtaceae). Phytotaxa 234 (2): 159 - 171. http: // dx. doi. org / 10.11646 / phytotaxa. 234.2.6"type="journal article"year="2015">Santos (2015a: 163)</bibRefCitation>
<figureCitationid="136A2A5AFFEAFF82FC89FBDCFCEEFB96"box="[836,865,1024,1049]"captionStart="FIGURE 12"captionStartId="25.[136,229,1233,1254]"captionTargetBox="[160,1420,204,1176]"captionTargetId="figure-14@25.[150,1435,193,1209]"captionTargetPageId="25"captionText="FIGURE 12. Distribution of Myrcia attenuata (triangles), Myrcia foveolata (squares) and Myrcia summa (circles). Continuous lines represent South American country and Brazilian state boundaries. The grey gradient represents elevation."figureDoi="http://doi.org/10.5281/zenodo.13726727"httpUri="https://zenodo.org/record/13726727/files/figure.png"pageId="23">12</figureCitation>
<materialsCitationid="3B393C82FFEAFF82FF45FB96FD7BFB0C"collectingDate="1984-02-04"collectorName="Montagne de la Trinite"country="French Guiana"elevation="400"location="FRENCH GUIANA"pageId="23"specimenCount="2"typeStatus="holotype">
, present at every internode, early deciduous, free, deltate, externally pubescent, internally glabrous; terminal node with central bud developed, pubescent, lateral ones undeveloped.
, elliptic or oblong, apex caudate or acuminate, base attenuate or cuneate, margin plane, secondary veins 2.5–4.0 mm apart, held at an angle of 70–75° relative to the midvein, marginal vein 0.5–1.0 mm from the margin, tertiary veins conspicuous; adaxial surface with scattered trichomes when immature, glabrous at maturity, midvein sulcate in the first half and flat in the second half, secondary veins slightly raised, pellucid dots inconspicuous, more than 15 per mm
; abaxial surface with scattered trichomes when immature, glabrous at maturity, midvein raised, secondary veins raised, pellucid dots slightly conspicuous to inconspicuous, less than 5 to more than 15 per mm
4.0–9.5 × 2.5–6.0 cm, pyramidal, axillar at the terminal or subterminal nodes, terminal dichasia usually with three flowers, 6–40 flowers, 1–4 branching at the base, rachis pubescent, first internode of central rachis
wide, semicylindrical to flattened, distal internodes flattened, opposite branching, 2–5 times per node, epidermal protrusion present at the nodes (usually absent in apical branches).
above the summit of the ovary, not tearing at anthesis, externally pubescent, pellucid dots inconspicuous (covered by the indumentum), internally glabrous; calyx 4–merous, lobes 1.2–2.8 ×
<taxonomicNameid="4C514D5CFFE5FF8DFBCFF82CFB27F78A"authorityName="M. F. Santos"authorityYear="2015"box="[1026,1192,2032,2053]"class="Magnoliopsida"family="Myrtaceae"genus="Myrcia"kingdom="Plantae"order="Myrtales"pageId="24"phylum="Tracheophyta"rank="species"species="attenuata">
<taxonomicNameid="4C514D5CFFE4FF8CFE62FB0DFDD7FB69"authorityName="M. F. Santos"authorityYear="2015"box="[431,600,1233,1254]"class="Magnoliopsida"family="Myrtaceae"genus="Myrcia"kingdom="Plantae"order="Myrtales"pageId="25"phylum="Tracheophyta"rank="species"species="attenuata">
<emphasisid="B925EACDFFE4FF8CFF70FA33FE68F987"bold="true"box="[189,487,1519,1544]"pageId="25">Distribution and Habitat</emphasis>
:—
<taxonomicNameid="4C514D5CFFE4FF8CFDC7FA33FD44F987"authorityName="M. F. Santos"authorityYear="2015"box="[522,715,1519,1544]"class="Magnoliopsida"family="Myrtaceae"genus="Myrcia"kingdom="Plantae"order="Myrtales"pageId="25"phylum="Tracheophyta"rank="species"species="attenuata">
<figureCitationid="136A2A5AFFE4FF8CFF3CF9CFFEECF9A3"box="[241,355,1555,1580]"captionStart="FIGURE 12"captionStartId="25.[136,229,1233,1254]"captionTargetBox="[160,1420,204,1176]"captionTargetId="figure-14@25.[150,1435,193,1209]"captionTargetPageId="25"captionText="FIGURE 12. Distribution of Myrcia attenuata (triangles), Myrcia foveolata (squares) and Myrcia summa (circles). Continuous lines represent South American country and Brazilian state boundaries. The grey gradient represents elevation."figureDoi="http://doi.org/10.5281/zenodo.13726727"httpUri="https://zenodo.org/record/13726727/files/figure.png"pageId="25">Figure 12</figureCitation>
<bibRefCitationid="EFC04B2EFFE4FF8CFD70F9EBFC19F9DF"author="Santos, M. F. & Lucas, E. & Sano, P. T."box="[701,918,1591,1616]"pageId="25"pagination="159 - 171"refId="ref72496"refString="Santos, M. F., Lucas, E. & Sano, P. T. (2015 a) Five new South American species of Myrcia s. l. (Myrtaceae). Phytotaxa 234 (2): 159 - 171. http: // dx. doi. org / 10.11646 / phytotaxa. 234.2.6"type="journal article"year="2015">
). The three known records are distant from each other and indicate a wider occurrence in the region (
<bibRefCitationid="EFC04B2EFFE4FF8CFD1DF987FC24F9FB"author="Santos, M. F. & Lucas, E. & Sano, P. T."box="[720,939,1627,1652]"pageId="25"pagination="159 - 171"refId="ref72496"refString="Santos, M. F., Lucas, E. & Sano, P. T. (2015 a) Five new South American species of Myrcia s. l. (Myrtaceae). Phytotaxa 234 (2): 159 - 171. http: // dx. doi. org / 10.11646 / phytotaxa. 234.2.6"type="journal article"year="2015">
<taxonomicNameid="4C514D5CFFE4FF8CFE93F9A3FD91F917"authorityName="M. F. Santos"authorityYear="2015"box="[350,542,1663,1688]"class="Magnoliopsida"family="Myrtaceae"genus="Myrcia"kingdom="Plantae"order="Myrtales"pageId="25"phylum="Tracheophyta"rank="species"species="attenuata">
<taxonomicNameid="4C514D5CFFE4FF8CFD0CF97FFC0DF933"authorityName="M. F. Santos"authorityYear="2015"box="[705,898,1699,1724]"class="Magnoliopsida"family="Myrtaceae"genus="Myrcia"kingdom="Plantae"order="Myrtales"pageId="25"phylum="Tracheophyta"rank="species"species="attenuata">
, but the species probably has a wider distribution and occurs within a region with well-preserved vegetation. The species is considered Data Deficient (DD;
<bibRefCitationid="EFC04B2EFFE4FF8CFDABF937FD63F88B"author="IUCN"box="[614,748,1771,1796]"pageId="25"refId="ref70426"refString="IUCN. (2001) IUCN Red List Categories and Criteria, Version 3.1. Prepared by the IUCN Species Survival Commission. IUCN, Gland and Cambridge."type="book"year="2001">IUCN 2001</bibRefCitation>
;
<bibRefCitationid="EFC04B2EFFE4FF8CFD35F937FC5DF88B"author="Santos, M. F. & Lucas, E. & Sano, P. T."box="[760,978,1771,1796]"pageId="25"pagination="159 - 171"refId="ref72496"refString="Santos, M. F., Lucas, E. & Sano, P. T. (2015 a) Five new South American species of Myrcia s. l. (Myrtaceae). Phytotaxa 234 (2): 159 - 171. http: // dx. doi. org / 10.11646 / phytotaxa. 234.2.6"type="journal article"year="2015">
<taxonomicNameid="4C514D5CFFE4FF8CFEACF8D3FDABF8A7"authorityName="M. F. Santos"authorityYear="2015"box="[353,548,1807,1832]"class="Magnoliopsida"family="Myrtaceae"genus="Myrcia"kingdom="Plantae"order="Myrtales"pageId="25"phylum="Tracheophyta"rank="species"species="attenuata">
differing by its keeled immature branches (vs. not keeled), mixed terminal and subterminal inflorescences (vs. only terminal inflorescences), turbinate floral buds (vs. clavate) and fruit with an attenuated base (vs. rounded base) (
<bibRefCitationid="EFC04B2EFFE4FF8CFC33F88BFB51F8FF"author="Santos, M. F. & Lucas, E. & Sano, P. T."box="[1022,1246,1879,1904]"pageId="25"pagination="159 - 171"refId="ref72496"refString="Santos, M. F., Lucas, E. & Sano, P. T. (2015 a) Five new South American species of Myrcia s. l. (Myrtaceae). Phytotaxa 234 (2): 159 - 171. http: // dx. doi. org / 10.11646 / phytotaxa. 234.2.6"type="journal article"year="2015">
). The species was not included in the phylogenetic study of
<taxonomicNameid="4C514D5CFFE4FF8CFD91F8A7FB13F81B"authority="(Santos et al. 2016 a)"baseAuthorityName="Santos"baseAuthorityYear="2016"box="[604,1180,1915,1940]"class="Magnoliopsida"family="Myrtaceae"genus="Myrcia"kingdom="Plantae"order="Myrtales"pageId="25"phylum="Tracheophyta"rank="section"section="Sympodiomyrcia">
<bibRefCitationid="EFC04B2EFFE4FF8CFC75F8A7FB1BF81B"author="Santos, M. F. & Sano, P. T. & Forest, F. & Lucas, E."box="[952,1172,1915,1940]"pageId="25"pagination="759 - 774"refId="ref72629"refString="Santos, M. F., Sano, P. T., Forest, F. & Lucas, E. (2016 a) Phylogeny, morphology and circumscription of Myrcia sect. Sympodiomyrcia (Myrcia s. l., Myrtaceae). Taxon 65 (4): 759 - 774. http: // dx. doi. org / 10.12705 / 654.5"type="journal article"year="2016">
, but bears all diagnostic characters of the group (
<bibRefCitationid="EFC04B2EFFE4FF8CFE55F843FDFBF837"author="Santos, M. F. & Lucas, E. & Sano, P. T."box="[408,628,1951,1976]"pageId="25"pagination="159 - 171"refId="ref72496"refString="Santos, M. F., Lucas, E. & Sano, P. T. (2015 a) Five new South American species of Myrcia s. l. (Myrtaceae). Phytotaxa 234 (2): 159 - 171. http: // dx. doi. org / 10.11646 / phytotaxa. 234.2.6"type="journal article"year="2015">
<emphasisid="B925EACDFFE4FF8CFF70F81FFDF9F853"bold="true"box="[189,630,1987,2012]"pageId="25">Available illustrations and images:—</emphasis>
<bibRefCitationid="EFC04B2EFFE4FF8CFDBBF81FFCEEF853"author="Santos, M. F. & Lucas, E. & Sano, P. T."box="[630,865,1987,2012]"pageId="25"pagination="159 - 171"refId="ref72496"refString="Santos, M. F., Lucas, E. & Sano, P. T. (2015 a) Five new South American species of Myrcia s. l. (Myrtaceae). Phytotaxa 234 (2): 159 - 171. http: // dx. doi. org / 10.11646 / phytotaxa. 234.2.6"type="journal article"year="2015">
<collectionCodeid="ED40AE1AFFE4FF8CFD1BF7D7FCA5F7AB"box="[726,810,2059,2084]"country="USA"lsid="urn:lsid:biocol.org:col:15602"name="University of Michigan"pageId="25"type="Herbarium">MICH</collectionCode>