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    <subfield code="a">Bulbothrix species (Parmeliaceae, lichenized Ascomycota) with new records from the Cerrado in the state of Maranh&#xE3;o, Brazil</subfield>
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Abstract

The genus Bulbothrix comprises over 60 species of lichenized fungi worldwide, with
notable diversity in South America, particularly in Brazil, which is home to 28 species.
Its species are characterized by their small, laciniate thallus, bulbous-based cilia, cortical
atranorin, and diverse medullary chemistry. Despite some taxonomic studies in Brazil,
only six species have been recorded from Maranh&#xE3;o. Given that approximately 60%
of Maranh&#xE3;o is covered by the rich and diverse Cerrado domain, there is an urgent
need for more lichenological research in these areas. This study aims to address part
of the knowledge gap regarding the genus in the state through expeditions to various
Cerrado areas in Southern Maranh&#xE3;o. We collected and identified six corticolous
species of Bulbothrix: B. continua, B. fungicola, B. isidiza, B. sipmanii, B. subcoronata,
and B. viridescens. Notably, three species (B. isidiza, B. subcoronata, and B. viridescens)
represent new records for Maranh&#xE3;o. This work not only provides an identification key
and descriptions of these species but also enhances our understanding of Bulbothrix
diversity in Maranh&#xE3;o, expanding the known occurrences, and emphasizing the
importance of further taxonomic explorations in this biodiverse region.

Key words:
&#x2022; corticolous
&#x2022; lichenized fungi
&#x2022; new occurrence
&#x2022; taxonomy





Resumo

O g&#xEA;nero Bulbothrix compreende cerca de 60 esp&#xE9;cies de fungos liquenizados em todo
o mundo, com not&#xE1;vel diversidade na Am&#xE9;rica do Sul, particularmente no Brasil, que
abriga 28 esp&#xE9;cies. Suas esp&#xE9;cies s&#xE3;o caracterizadas por seus talos pequenos e laciniados,
c&#xED;lios com base bulbosa, atranorina cortical e qu&#xED;mica medular diversa. Apesar de alguns
estudos taxon&#xF4;micos no Brasil, apenas seis esp&#xE9;cies foram registradas no Maranh&#xE3;o.
Dado que aproximadamente 60% do Maranh&#xE3;o &#xE9; coberto pelo rico e diverso dom&#xED;nio
do Cerrado, h&#xE1; uma necessidade urgente de mais pesquisas liquenol&#xF3;gicas nessas &#xE1;reas.
Este estudo visou preencher parte da lacuna de conhecimento sobre o g&#xEA;nero no Estado
atrav&#xE9;s de expedi&#xE7;&#xF5;es a v&#xE1;rias &#xE1;reas de Cerrado no sul do Maranh&#xE3;o. Foram coletadas
e identificadas seis esp&#xE9;cies cortic&#xED;colas de Bulbothrix: B. continua, B. fungicola, B.
isidiza, B. sipmanii, B. subcoronata e B. viridescens. Notavelmente, tr&#xEA;s esp&#xE9;cies (B.
isidiza, B. subcoronata e B. viridescens) representam novos registros para o Maranh&#xE3;o.
Este trabalho n&#xE3;o apenas fornece uma chave de identifica&#xE7;&#xE3;o e descri&#xE7;&#xF5;es para estas
esp&#xE9;cies, mas tamb&#xE9;m aumenta nossa compreens&#xE3;o da diversidade de Bulbothrix no
Maranh&#xE3;o, expandindo as ocorr&#xEA;ncias conhecidas e enfatizando a import&#xE2;ncia de mais
explora&#xE7;&#xF5;es taxon&#xF4;micas nesta regi&#xE3;o de grande biodiversidade.


Palavras-chave:
&#x2022; cortic&#xED;cola
&#x2022; fungos liquenizados
&#x2022; novas ocorr&#xEA;ncias
&#x2022; taxonomia</subfield>
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    <subfield code="9">360062</subfield>
    <subfield code="d">Rio de Janeiro-RJ Jardim Botanico do Rio de Janeiro 1935</subfield>
    <subfield code="o">2026-0452</subfield>
    <subfield code="t">Rodrigu&#xE9;sia (Brazil)</subfield>
    <subfield code="x">0370-6583; 2175-7860 on-line</subfield>
    <subfield code="g">v. 76 p. 1-8; (2025)</subfield>
    <subfield code="w">BR2025007523</subfield>
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