biostudies-literatureUnknown14Oliveira JJSRhizomorphs are hair- or wire-like melanized structures with structural differentiation analogous to plant roots that help fungi spread over an area and find food resources. Some species of multiple groups of the <i>Ascomycota</i> and the <i>Basidiomycota</i> produce different types of rhizomorphs. In the <i>Agaricales</i>, the structures are largely found in <i>Marasmiineae</i>, particularly in the <i>Omphalotaceae</i>, <i>Marasmiaceae</i>, and <i>Physalacriaceae</i>. Many rhizomorph-forming species spread over the forest floor (ground level), while others form aerial litter-trapping rhizomorph systems that hang on living branches of the forest understorey. Here, we describe three new species that form aerial systems, two in <i>Marasmius</i> and one in <i>Pusillomyces</i>, all of which inFungal systematics and evolution35-55https://www.ebi.ac.uk/biostudies/studies/S-EPMC11739697biostudies-literatureSpider Fungi: New species of <i>Marasmius</i> and <i>Pusillomyces</i> in the aerial rhizomorph web-maker guild in Amazonia.PMC11739697Rodrigues DPVargas-Isla RIshikawa NKCabral TSOliveira JJSfalseSpider Fungi: New species of <i>Marasmius</i> and <i>Pusillomyces</i> in the aerial rhizomorph web-maker guild in Amazonia.Rhizomorphs are hair- or wire-like melanized structures with structural differentiation analogous to plant roots that help fungi spread over an area and find food resources. Some species of multiple groups of the <i>Ascomycota</i> and the <i>Basidiomycota</i> produce different types of rhizomorphs. In the <i>Agaricales</i>, the structures are largely found in <i>Marasmiineae</i>, particularly in the <i>Omphalotaceae</i>, <i>Marasmiaceae</i>, and <i>Physalacriaceae</i>. Many rhizomorph-forming species spread over the forest floor (ground level), while others form aerial litter-trapping rhizomorph systems that hang on living branches of the forest understorey. Here, we describe three new species that form aerial systems, two in <i>Marasmius</i> and one in <i>Pusillomyces</i>, all of which in2024-01-01T00:00:00Z2024 Dec2026-06-02T01:49:44.984Z2025-04-07T04:16:56.869ZS-EPMC117396973983029010.3114/fuse.2024.14.03