# Brianaria

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Brianaria
> Markdown URL: https://mediated.wiki/source/Brianaria.md
> Source: https://en.wikipedia.org/wiki/Brianaria
> Source revision: 1339882541
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{Short description|Genus of lichens}}
{{Use dmy dates|date=September 2025}}
{{Use Oxford spelling|date=September 2025}}
{{Automatic taxobox
| image = 
| taxon = Brianaria
| authority = S.Ekman & M.Svensson (2014)
| type_species = ''Brianaria sylvicola''
| type_species_authority = ([Flot.](/source/Flot.) ex [Körb.](/source/K%C3%B6rb.)) S.Ekman & M.Svenss. (2014)
| subdivision_ranks = Species
| subdivision = ''[B. bauschiana](/source/Brianaria_bauschiana)''<br>
''[B. lutulata](/source/Brianaria_lutulata)''<br>
''[B. sylvicola](/source/Brianaria_sylvicola)''<br>
''[B. tuberculata](/source/Brianaria_tuberculata)''
}}

'''''Brianaria''''' is a [lichen](/source/lichen) genus in the family [Psoraceae](/source/Psoraceae).<ref name="CoL_3D67"/> It was [circumscribed](/source/circumscription_(taxonomy)) in 2014 by Stefan Ekman and Måns Svensson to contain four closely related species formerly in the ''[Micarea](/source/Micarea) sylvicola'' group.

==Taxonomy==

''Brianaria'' was introduced in 2014 to accommodate the long-recognised "''Micarea sylvicola'' group", whose species proved—by DNA analyses and shared anatomical traits—to fall outside ''[Micarea](/source/Micarea)'' in the strict sense. The authors recombined four former ''Micarea'' species as ''Brianaria''. The genus name honours [Brian John Coppins](/source/Brian_John_Coppins) for his work on [crustose lichen](/source/crustose_lichen)s. In [phylogenetic](/source/phylogenetic) studies ''Brianaria'' forms a single, well-supported [lineage](/source/lineage_(evolution)) within the family [Psoraceae](/source/Psoraceae) and is probably the [sister](/source/sister_taxon) group to ''[Psora](/source/Psora)'' and ''[Protoblastenia](/source/Protoblastenia)'', rather than part of the [Ectolechiaceae](/source/Ectolechiaceae) where ''Micarea'' sits.<ref name="Ekman & Svensson 2014"/>

The separation of the genera rests on clear diagnostic {{lichengloss|characters}}. ''Brianaria'' has a green-algal partner ({{lichengloss|photobiont}}) that is not the {{lichengloss|micareoid}} type typical of ''Micarea''; its tiny, convex fruiting discs ([apothecia](/source/apothecia)) lack a distinct rim (no {{lichengloss|excipulum}}); the spore sacs ([asci](/source/ascus)) are of the ''[Psora](/source/Psora)''-type with a broad, dark "tube" that widens towards the tip; the accessory filaments in the [hymenium](/source/hymenium) ({{lichengloss|paraphyses}}) occur in two forms (dimorphic); the [sexual](/source/sexual_reproduction) spores are 0–1-septate; and the [asexual](/source/asexual_reproduction) reproductive structures ([pycnidia](/source/pycnidia)) are sunk in the thallus and produce short, rod-shaped [conidia](/source/conidia). Taken together, these features set ''Brianaria'' apart from ''Micarea'' in the strict sense, from ''Psora'' (which is [squamulose](/source/squamulose_lichen) in form and chemically different), and from ''Protoblastenia'' (which has [anthraquinone](/source/anthraquinone) pigments and a developed rim).<ref name="Ekman & Svensson 2014"/>

Nomenclaturally, the [type species](/source/type_species) traces back to ''Lecidea sylvicola'', validated by [Gustav Wilhelm Körber](/source/Gustav_Wilhelm_K%C3%B6rber) in 1855 (after an invalid mention by [Julius von Flotow](/source/Julius_von_Flotow) in 1829),<ref name="Körber 1855"/> later placed in ''Micarea'',<ref name="Vězda & Wirth 1976"/> and finally transferred to ''Brianaria'' when the genus was erected.<ref name="Ekman & Svensson 2014"/>

==Description==

Characteristics of the genus ''Brianaria'' include the small, convex [apothecia](/source/apothecia) that lack an excipulum; an [ascus](/source/ascus) of the "Psora"-type; 0–1-[septate](/source/septum) [ascospore](/source/ascospore)s, dimorphic [paraphyses](/source/paraphyses), and immersed [pycnidia](/source/pycnidia) that contain [bacilliform](/source/bacilliform) [conidia](/source/conidia). The [photobiont](/source/photobiont) is [chlorococcoid](/source/Chlorococcaceae), and non-micareoid.<ref name="Ekman & Svensson 2014"/>

==Species==
*''[Brianaria bauschiana](/source/Brianaria_bauschiana)'' {{au|(Körb.) S.Ekman & M.Svenss. (2014)}}
*''[Brianaria lutulata](/source/Brianaria_lutulata)'' {{au|(Nyl.) S.Ekman & M.Svenss. (2014)}}
*''[Brianaria sylvicola](/source/Brianaria_sylvicola)'' {{au|(Flot. ex Körb.) S.Ekman & M.Svenss. (2014)}}
*''[Brianaria tuberculata](/source/Brianaria_tuberculata)'' {{au|(Sommerf.) S.Ekman & M.Svenss. (2014)}}

==References==
{{Reflist|refs=

<ref name="CoL_3D67">{{Catalogue of Life |id=3D67 |title=''Brianaria'' |access-date=17 September 2025}}</ref>

<ref name="Ekman & Svensson 2014">{{cite journal |last1=Ekman |first1=Stefan |last2=Svensson |first2=Måns |title=''Brianaria'' (Psoraceae), a new genus to accommodate the ''Micarea sylvicola'' group |journal=The Lichenologist |volume=46 |issue=3 |year=2014 |pages=285–294 |doi=10.1017/S0024282913000613 |bibcode=2014ThLic..46..285E }}</ref>

<ref name="Körber 1855">{{cite book |last=Körber |first=G.W. |year=1855 |title=Systema lichenum Germaniae |page=254 |language=de}}</ref>

<ref name="Vězda & Wirth 1976">{{cite journal |last1=Vězda |first1=A. |last2=Wirth |first2=V. |year=1976 |title=Zur Taxonomie der Flechtengattung ''Micarea'' Fr. em. Hedl. |journal=Folia Geobotanica et Phytotaxonomica |volume=11 |issue=1 |pages=93–102 |doi=10.1007/BF02853320 |language=de}}</ref>

}}

{{Taxonbar|from=Q22106623}}
Category:Lecanorales
Category:Lichen genera
Category:Lecanorales genera
Category:Taxa described in 2014
Category:Taxa named by Stefan Ekman

---
Adapted from the Wikipedia article [Brianaria](https://en.wikipedia.org/wiki/Brianaria) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Brianaria?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.