{{Short description|Single species fungal genus}} {{Use mdy dates|date=October 2025}} {{Use American English|date=October 2025}} {{Speciesbox | image = | image_caption = | parent_authority = Aptroot & L.Umaña (2006) | taxon = Lueckingia polyspora | authority = Aptroot & L.Umaña (2006) }}
'''''Lueckingia''''' is a genus in the family Ramalinaceae.<ref name="2024 Outline"/> It is a monospecific genus, containing the single corticolous lichen species '''''Lueckingia polyspora'''''.<ref name="CoL_5H7D"/> The genus and species were described as new to science in 2006. The species, known only from Costa Rica, was originally found growing on bark in the shaded understory of a lowland rainforest.
==Taxonomy==
''Lueckingia'' was established in 2006 by André Aptroot and Loengrin Umaña to accommodate a distinctive squamulose lichen in the family Ramalinaceae; the genus is monospecific, with ''Lueckingia polyspora'' designated as the type and only species. The holotype was collected on bark in lowland rainforest at the Hitoy Cerere Biological Reserve on Costa Rica's Caribbean slope (Limón Province; near Pandora; 150–500 m elevations), with isotypes (duplicates) deposited in several herbaria. The species epithet honours Robert Lücking, whose work helped drive the TICOLICHEN biodiversity inventory during which the material was discovered.<ref name="Aptroot et al. 2006"/>
Aptroot and Umaña separated ''Lueckingia'' from superficially similar ramalinaceous genera on a suite of {{lichengloss|characters}} rather than any single trait. Although the thallus and apothecial appearance recall ''Physcidia'', ''Lueckingia'' differs in having polysporous asci, a lack of detectable secondary metabolites (by thin-layer chromatography and spot tests), a {{lichengloss|microphylline}} (not {{lichengloss|placodioid}}) thallus, and {{lichengloss|biatorine}} apothecia. It also differs from other squamulose genera with biatorine apothecia by its polysporous asci. Superficial resemblance to the polysporous tropical genus ''Piccolia'' is discounted because ''Piccolia'' species have a crustose thallus, usually contain anthraquinones, and have a different ascus type. These combined features, according to the authors, justified placement in a separate, monospecific genus.<ref name="Aptroot et al. 2006"/>
==Habitat and distribution==
''Lueckingia polyspora'' is corticolous, occurring on the bark of large rainforest trees (reportedly a member of the Lecythidaceae) in the shaded understorey of lowland tropical rainforest. Known collections come from 150–500 m elevation on the Caribbean slope of the Cordillera de Talamanca in Costa Rica, where the type was taken in disturbed primary forest at the Hitoy Cerere Reserve near Pandora.<ref name="Aptroot et al. 2006"/>
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<ref name="Aptroot et al. 2006">{{cite journal |last1=Aptroot |first1=A. |last2=Umaña |first2=L. |last3=Chaves |first3=J.L. |last4=Trest |first4=M.T. |year=2006 |title=A first assessment of the Ticolichen biodiversity inventory in Costa Rica: three new squamulose genera (Lecanorales: Ramalinaceae and Pilocarpaceae) |journal=Journal of the Hattori Botanical Laboratory |volume=100 |pages=617–624 |url=https://www.researchgate.net/publication/292626025}}</ref>
<ref name="CoL_5H7D">{{Catalogue of Life |id=5H7D |title=''Lueckingia'' |access-date=October 16, 2025}}</ref>
}}
{{Taxonbar|from=Q6699563}}
Category:Ramalinaceae Category:Lichen genera Category:Monotypic Lecanorales genera Category:Taxa named by André Aptroot Category:Taxa described in 2006