{{Short description|Species of lichen}} {{Use dmy dates|date=April 2023}} {{Speciesbox | image = | image_caption = | taxon = Redonographa galapagoensis | authority = Bungartz & [[Robert Lücking|Lücking]] (2013) }}
'''''Redonographa galapagoensis''''' is a species of [[saxicolous lichen|saxicolous]] (rock-dwelling), [[crustose lichen]] in the family [[Redonographaceae]].<ref name="CoL"/> Found in the [[Galápagos Islands]], it was [[species description|formally described]] as a new species in 2013 by lichenologists Frank Bungartz and [[Robert Lücking]]. The [[type (biology)|type specimen]] was collected by the first author from [[Santiago Island (Galápagos)|Santiago Island]]. ''Redonographa galapagoensis'' grows along the coast underneath wind- and rain-sheltered, shaded overhangs. ''Redonographa galapagoensis'' was previously reported as ''Carbacanthographis saxiseda'', but it was found to represent an undescribed [[taxon]]. It appears to be [[endemism|endemic]] to the Galapagos Islands.<ref name="Lücking et al. 2013"/>
==Description== The [[thallus]] of ''Redonographa galapagoensis'' is {{lichengloss|areolate}} and whitish gray, becoming yellowish white in the [[herbarium]], with a smooth, {{lichengloss|epruinose}} surface. The [[apothecia]] are prominent, rounded to shortly {{lichengloss|lirellate}}, and mostly unbranched. The {{lichengloss|periphysoids}} are {{lichengloss|verrucose}}, and the {{lichengloss|ascospores}} are narrow and somewhat {{lichengloss|muriform}} with thickened [[septum|septa]] and lens-shaped to rounded {{lichengloss|lumina}}. The lichen produces [[norstictic acid]], and the thallus [[spot test (lichen)#Tests|turns K+]] (yellow, then red), forming needle-shaped crystals under the microscope.<ref name="Lücking et al. 2013"/>
The species is recognized by its rather prominent, partially open ascomata, verrucose periphysoids, and narrow ascospores. Its verrucose periphysoids have a different appearance from the {{lichengloss|spinulose}} surface found in ''Carbacanthographis'', suggesting that the two genera are not closely related and do not have shared [[Apomorphy and synapomorphy|synapomorphies]].<ref name="Lücking et al. 2013"/>
==References== {{Reflist|refs=
<ref name="CoL">{{Catalogue of Life |id=4RPC4 |title=''Redonographa galapagoensis'' Bungartz & Lücking |access-date=6 April 2023}}</ref>
<ref name="Lücking et al. 2013">{{cite journal |last1=Lücking |first1=Robert |last2=Tehler |first2=Anders |last3=Bungartz |first3=Frank | last4=Rivas Plata |first4=Eimy |last5=Lumbsch |first5=H. Thorsten |title=Journey from the West: Did tropical Graphidaceae (lichenized Ascomycota: Ostropales) evolve from a saxicolous ancestor along the American Pacific coast? |journal=American Journal of Botany |volume=100 |issue=5 |year=2013 |doi=10.3732/ajb.1200548 |pages=844–856}}</ref>
}}
{{Taxonbar|from=Q108316245}}
[[Category:Graphidales]] [[Category:Lichen species]] [[Category:Lichens described in 2013]] [[Category:Lichens of the Galápagos Islands]] [[Category:Taxa named by Robert Lücking]] [[Category:Taxa named by Frank Bungartz]]