# Aptrootia

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***Aptrootia*** is a [genus](/source/Genus) of [fungi](/source/Fungi) in the family [Trypetheliaceae](/source/Trypetheliaceae).[1] It has four species. The genus was [circumscribed](/source/Circumscription_(taxonomy)) by [Robert Lücking](/source/Robert_L%C3%BCcking) and [Harrie Sipman](/source/Harrie_Sipman) in 2007, with *Aptrootia terricola* assigned as the [type species](/source/Type_species). This species, originally described by Dutch mycologist [André Aptroot](/source/Andr%C3%A9_Aptroot) as a species of *[Thelenella](/source/Thelenella)*,[2] is known from [Papua New Guinea](/source/Papua_New_Guinea) and [Costa Rica](/source/Costa_Rica).[3] Later [molecular](/source/Molecular_phylogenetic) work showed that the species did not belong in *Thelenella* (Aptroot himself had expressed doubt about this generic placement), but rather, in the Trypetheliaceae, with a [sister taxon](/source/Sister_taxon) relationship to a branch including *[Bathelium](/source/Bathelium)* and a [lineage](/source/Lineage_(evolution)) containing *[Trypethelium floridanum](/source/Trypethelium_floridanum)*. The new genus name honours Aptroot, "in recognition of his numerous contributions to tropical lichenology".[3]

Species in genus *Aptrootia* have completely immersed [perithecia](/source/Perithecia) with a brown-black [ostiolar](/source/Ostiole) region. This is surrounded by a white, cartilaginous [thallus](/source/Thallus) reminiscent of those in family [Gomphillaceae](/source/Gomphillaceae).[3]

## Species

- *[Aptrootia elatior](/source/Aptrootia_elatior)* (Stirt.) Aptroot (2009)[4] – Australia
- *[Aptrootia khaoyaiensis](/source/Aptrootia_khaoyaiensis)* Polyiam & Lücking (2024)[5] – Thailand
- *[Aptrootia robusta](/source/Aptrootia_robusta)* (P.M.McCarthy & Kantvilas) Aptroot (2009)[4] – Australia
- *[Aptrootia terricola](/source/Aptrootia_terricola)* (Aptroot) Lücking, L.Umaña & Chaves (2007) – Papua New Guinea; Costa Rica

## References

1. Wijayawardene, N.N.; Hyde, K.D.; Dai, D.Q.; Sánchez-García, M.; Goto, B.T.; Saxena, R.K. et al. (2022). ["Outline of Fungi and fungus-like taxa – 2021"](https://www.researchgate.net/publication/358798332). *Mycosphere*. **13** (1): 53–453. [doi:10.5943/mycosphere/13/1/2](https://doi.org/10.5943/mycosphere/13/1/2). [hdl:10481/76378](https://hdl.handle.net/10481/76378)

1. Aptroot, André (1999). ["*Thelenella terricola*, a new saprobic ascomycete from upland Papua New Guinea"](https://www.fungaldiversity.org/fdp/sfdp/FD_2_43-46.pdf). *Fungal Diversity*. **2**: 43–46.

1. Lücking, Robert; Sipman, Harrie J.M.; Umaña, Loengrin; Chaves, Jose-Luis; Lumbsch, H.Thorsten (2007). "*Aptrootia* (Dothideomycetes: Trypetheliaceae), a new genus of pyrenocarpous lichens for *Thelenella terricola*". *The Lichenologist*. **39** (2): 187–193. [doi:10.1017/s0024282907006445](https://doi.org/10.1017/s0024282907006445)

1. Aptroot, A. (2009). *Trypetheliales*. Vol. 57, no. Lichens 5. [Flora of Australia](/source/Flora_of_Australia). pp. 535–552. ISBN 978-0-643-09665-3.

1. Polyiam, Wetchasart; Watthana, Santi; Muangsan, Nooduan; Parnmen, Sittiporn; Lücking, Robert (2024). "*Aptrootia khaoyaiensis* (Trypetheliaceae), a new corticolous lichen from the dry dipterocarp forest in central Thailand". *The Lichenologist*. **56** (4): 169–173. [doi:10.1017/S0024282924000136](https://doi.org/10.1017/S0024282924000136)

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