# Redonographa

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Genus of lichens

Redonographa Scientific classification Kingdom: Fungi Division: Ascomycota Class: Lecanoromycetes Order: Graphidales Family: Redonographaceae Lumbsch (2020) Genus: Redonographa Lücking, Tehler & Lumbsch (2013) Type species Redonographa chilensis (Zahlbr.) Lücking & Tehler (2013) Species R. chilensis R. galapagoensis R. parvispora R. saxiseda R. saxorum

***Redonographa*** is a [genus](/source/Genus) of [lichen](/source/Lichen)-forming [fungi](/source/Fungi) in the [monogeneric](/source/Monogeneric) family **Redonographaceae**.[1] It has five species.[2]

## Taxonomy

In 2013, lichenologists [Robert Lücking](/source/Robert_L%C3%BCcking), Anders Tehler, and [Helge Thorsten Lumbsch](/source/Helge_Thorsten_Lumbsch) proposed the new [subfamily](/source/Family_(taxonomy)) Redonographoideae to contain a [lineage](/source/Lineage_(evolution)) of lichen-forming fungi distinct from the [Graphidaceae](/source/Graphidaceae) subfamilies Fissurinoideae and Graphidoideae. They introduced the genus *Redonographa* with *Redonographa chilensis* assigned its [type species](/source/Type_species). Four species were initially included in the genus;[3] a fifth was added in 2020.[4] The genus is [named in honour](/source/Eponym) of Jorge Redón Figueroa (botany professor at [Viña del Mar University](/source/Vi%C3%B1a_del_Mar_University) and a [professor emeritus](/source/Emeritus#In_academia) at both the [University of Chile](/source/University_of_Chile) (Faculty of Sciences) and the [University of Valparaíso](/source/University_of_Valpara%C3%ADso) (Institute of Oceanology) for his significant contributions to Chilean lichenology.[3]

In 2020, Lumbsch proposed the family Redonographaceae, with the [authority](/source/Author_citation_(botany)) "(Lücking, Tehler & Lumbsch) Lumbsch, stat nov.".[5] In botanical taxonomy, "stat. nov." is an abbreviation for the [Latin](/source/Latin) term "status novus," ("new status"), and is used to indicate that an existing taxon (in this case, the subfamily Redonographoideae) has been reclassified or reassigned to a different rank or status within the [taxonomic hierarchy](/source/Taxonomic_rank).[5]

## Description

The genus *Redonographa* is distinct from *[Carbacanthographis](/source/Carbacanthographis)* due to its predominantly [saxicolous](/source/Saxicolous_lichen) growth habit, meaning it grows on rocks, and its predominantly smooth [periphysoids](/source/Glossary_of_lichen_terms#periphysoids), which are hair-like extensions found in the [lirellae](/source/Glossary_of_lichen_terms#lirellae). The [thallus](/source/Thallus), or outer layer of the lichen body, is relatively thick and varies in appearance from continuous to [areolate](/source/Glossary_of_lichen_terms#areolate). It may be [ecorticate](/source/Glossary_of_lichen_terms#ecorticate), meaning it lacks a [cortex](/source/Glossary_of_lichen_terms#cortex), or feature a compacted [pseudocortex](/source/Glossary_of_lichen_terms#pseudocortex).[3]

The lirellae, or fruiting structures, of *Redonographa* lichens can be [erumpent](/source/Glossary_of_lichen_terms#erumpent) to prominent and display a variety of forms, from unbranched to stellate (star-like) branching or even appearing in [pseudostromatic](/source/Glossary_of_lichen_terms#pseudostromata) clusters. These lirellae are surrounded by a basal to almost complete [thalline margin](/source/Glossary_of_lichen_terms#thalline_margin). As they mature, their [excipulum](/source/Glossary_of_lichen_terms#excipulum), or outer covering, becomes fully [carbonized](/source/Glossary_of_lichen_terms#carbonized), arching over the [hymenium](/source/Hymenium) and featuring short, smooth or apically warty [periphysoids](/source/Glossary_of_lichen_terms#periphysoids) above it. The hymenium of these lichens is clear.[3]

Each [ascus](/source/Ascus), or spore-producing sac, in *Redonographa* lichens contains eight [ascospores](/source/Glossary_of_lichen_terms#ascospores). These spores are [ellipsoid](/source/Ellipsoid) to oblong in shape and have 3–5 transverse [septa](/source/Septum) or are somewhat [muriform](/source/Glossary_of_lichen_terms#muriform) with 3–5 transverse and 0–2 longitudinal septa per segment. The spores have thickened septa and lens-shaped to rounded [lumina](/source/Glossary_of_lichen_terms#lumina), and they are transparent. These ascospores exhibit a negative iodine ([Lugol](/source/Lugol's_iodine)) reaction. In terms of [secondary chemistry](/source/Secondary_metabolism), *Redonographa* lichens produce [norstictic acid](/source/Norstictic_acid).[3]

## Species

Central and northern [Chile](/source/Chile) appears to be the [centre of diversity](/source/Vavilov_center) for *Redonographa*.[3]

- *[Redonographa chilensis](https://en.wikipedia.org/w/index.php?title=Redonographa_chilensis&action=edit&redlink=1)* (Zahlbr.) Lücking & Tehler (2013) – Chile

- *[Redonographa galapagoensis](/source/Redonographa_galapagoensis)* Bungartz & Lücking (2013) – Galapagos Islands

- *[Redonographa parvispora](https://en.wikipedia.org/w/index.php?title=Redonographa_parvispora&action=edit&redlink=1)* R.Miranda, Barcenas-Peña & Lücking (2020)[4] – Mexico

- *[Redonographa saxiseda](https://en.wikipedia.org/w/index.php?title=Redonographa_saxiseda&action=edit&redlink=1)* (Zahlbr.) Lücking & Tehler (2013) – Chile

- *[Redonographa saxorum](https://en.wikipedia.org/w/index.php?title=Redonographa_saxorum&action=edit&redlink=1)* (Egea & Torrente) Lücking & Tehler (2013) – [California](/source/California) and [Baja California](/source/Baja_California); Galapagos Islands

## References

1. **[^](#cite_ref-CoL_1-0)** ["*Redonographa*"](https://www.catalogueoflife.org/data/taxon/77GG). *[Catalogue of Life](/source/Catalogue_of_Life)*. [Species 2000](/source/Species_2000): Leiden, the Netherlands. Retrieved 6 April 2023.

1. **[^](#cite_ref-Wijayawardene_et_al._2022_2-0)** 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](/source/Doi_(identifier)):[10.5943/mycosphere/13/1/2](https://doi.org/10.5943%2Fmycosphere%2F13%2F1%2F2). [hdl](/source/Hdl_(identifier)):[10481/76378](https://hdl.handle.net/10481%2F76378).

1. ^ [***a***](#cite_ref-Lücking_et_al._2013_3-0) [***b***](#cite_ref-Lücking_et_al._2013_3-1) [***c***](#cite_ref-Lücking_et_al._2013_3-2) [***d***](#cite_ref-Lücking_et_al._2013_3-3) [***e***](#cite_ref-Lücking_et_al._2013_3-4) [***f***](#cite_ref-Lücking_et_al._2013_3-5) Lücking, Robert; Tehler, Anders; Bungartz, Frank; Rivas Plata, Eimy; Lumbsch, H. Thorsten (2013). "Journey from the West: Did tropical Graphidaceae (lichenized Ascomycota: Ostropales) evolve from a saxicolous ancestor along the American Pacific coast?". *American Journal of Botany*. **100** (5): 844–856. [doi](/source/Doi_(identifier)):[10.3732/ajb.1200548](https://doi.org/10.3732%2Fajb.1200548). [PMID](/source/PMID_(identifier)) [23594913](https://pubmed.ncbi.nlm.nih.gov/23594913).

1. ^ [***a***](#cite_ref-Miranda-González_et_al._2020_4-0) [***b***](#cite_ref-Miranda-González_et_al._2020_4-1) Miranda-González, Ricardo; Lücking, Robert; Barcenas-Peña, Alejandrina; Ángeles Herrera-Campos, María de los (2020). "The new genus *Jocatoa* (Lecanoromycetes: Graphidaceae) and new insights into subfamily Redonographoideae". *The Bryologist*. **123** (2): 127–143. [doi](/source/Doi_(identifier)):[10.1639/0007-2745-123.2.127](https://doi.org/10.1639%2F0007-2745-123.2.127).

1. ^ [***a***](#cite_ref-Wijayawardene_et_al._2020_5-0) [***b***](#cite_ref-Wijayawardene_et_al._2020_5-1) Wijayawardene, Nalin; Hyde, Kevin; Al-Ani, LKT; Dolatabadi, S; Stadler, Marc; Haelewaters, Danny; et al. (2020). ["Outline of Fungi and fungus-like taxa"](https://doi.org/10.5943%2Fmycosphere%2F11%2F1%2F8). *Mycosphere*. **11**: 1060–1456 [1102]. [doi](/source/Doi_(identifier)):[10.5943/mycosphere/11/1/8](https://doi.org/10.5943%2Fmycosphere%2F11%2F1%2F8). [hdl](/source/Hdl_(identifier)):[10481/61998](https://hdl.handle.net/10481%2F61998).

Taxon identifiers Redonographa Wikidata: Q16624622 Wikispecies: Redonographa CoL: 77GG GBIF: 7912881 IndexFungorum: 803247 IRMNG: 11915212 MycoBank: 803247 NCBI: 1333531 Open Tree of Life: 5346180 SpeciesFungorum: 803247

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