{{Short description|Genus of lichen-forming fungi}} {{Use dmy dates|date=November 2025}} {{Use Oxford spelling|date=November 2025}} {{Automatic taxobox | image = Psilolechia luicda (42199968580).jpg | image_caption = ''Psilolechia lucida'' | parent_authority = S. Stenroos, Miadl. & Lutzoni (2014) | taxon = Psilolechia | authority = A.Massal. (1860) | type_species = ''Psilolechia lucida'' | type_species_authority = (Ach.) M.Choisy (1949) | subdivision_ranks = Species | subdivision = *''P. clavulifera'' *''P. leprosa'' *''P. lucida'' *''P. purpurascens'' }}
'''''Psilolechia''''' is a genus of four species of crustose lichens. It is the only member of '''Psilolechiaceae''', a family that was created in 2014 to contain this genus.
==Taxonomy== The genus ''Psilolechia'' was established by Abramo Bartolommeo Massalongo in 1860.<ref name="Massalongo 1860"/> Formerly classified in the family Pilocarpaceae (now Ectolechiaceae),<ref name="Lumbsch"/> molecular phylogenetic analysis showed that ''Psilolechia'' represented a distinct lineage that deserved placement at the familial level, the Psilolechiaceae, which was formally circumscribed in 2014.<ref name="Miadlikowska et al. 2014"/> This arrangement was accepted in later large-scale updates of fungal classification.<ref name="Lücking et al. 2017"/><ref name="Wijayawardene et al. 2017"/><ref name="Wijayawardene et al. 2020"/> Psilolechiaceae is in the order Lecanorales, in the suborder Sphaerophorineae, which also includes the families Ectolechiaceae, Psoraceae, and Ramalinaceae.<ref name="Miadlikowska et al. 2014"/>
==Description== Psilolechiaceae is a monogeneric family of crustose lichens with {{lichengloss|effuse}}, ecorticate (lacking a cortex), leprose thalli formed by {{lichengloss|goniocysts}} (aggregations of photobiont cells surrounded by short-celled hyphae) containing ''Trebouxia'' or stichococcoid algae. The apothecia lack a distinct margin, and the asci are 8-spored and have a cylindrical to clavate shape. They feature a central, elongated tube-like structure, and a non-amyloid ascus wall surrounded by a thin outer layer. Both the tube-like structure and the thin outer layer stain dark blue in K/I. Ascospores are oblong-ovoid to tear-shaped, simple (rarely 1-septate in ''P. leprosa''), and hyaline.<ref name="Miadlikowska et al. 2014"/>
==Species== ''Psilolechia'' contains four species:<ref name="Mycobank"/> *''Psilolechia clavulifera'' {{au|(Nyl.) Coppins (1983)}}<ref name="Coppins 1983"/> – widespread *''Psilolechia leprosa'' {{au|Coppins & Purvis (1987)}}<ref name="Coppins & Purvis 1987"/> – north-west Europe; Greenland *''Psilolechia lucida'' {{au|(Ach.) M.Choisy (1949)}} – widespread *''Psilolechia purpurascens'' {{au|Coppins & Purvis (1987)}}<ref name="Coppins & Purvis 1987"/> – Tasmania ''Psilolechia'' species grow in locations that are humid and shaded.<ref name="Miadlikowska et al. 2014"/> ''P. leprosa'' tends to grow on mineral-enriched rocks and siliceous rocks,<ref name="Czarnota and Kukwa 2008"/> and is often recorded around old mines.<ref name="Purvis and Halls 1996"/>
==References== {{Reflist|colwidth=30em|refs=
<ref name="Coppins 1983">{{cite book |last=Coppins |first=Brian John |year=1983 |title=A Taxonomic Study of the Lichen Genus ''Micarea'' in Europe |series=Bulletin of the British Museum of Natural History |volume=11 |issue=2 |publisher=British Museum (Natural History) |location=London |page=201}}</ref>
<ref name="Coppins & Purvis 1987">{{cite journal |last1=Coppins |first1=B.J. |last2=Purvis |first2=O.W. |year=1987 |title=A review of ''Psilolechia'' |journal=The Lichenologist |volume=19 |issue=1 |pages=29–42 |doi=10.1017/S0024282987000045}}</ref>
<ref name="Czarnota and Kukwa 2008">{{cite journal |first1=Paweł |last1=Czarnota |first2=Martin |last2=Kukwa |title=Contribution to the knowledge of some poorly known lichens in Poland. II. The genus ''Psilolechia'' |journal=Folia Cryptog. Estonica |year=2008 |volume=44 |pages=9–15 |url=http://ojs.utlib.ee/index.php/FCE/article/view/13702/8749}}</ref>
<ref name="Lücking et al. 2017">{{cite journal |last1=Lücking |first1=Robert |last2=Hodkinson |first2=Brendan P. |last3=Leavitt |first3=Steven D. |year=2017 |title=The 2016 classification of lichenized fungi in the Ascomycota and Basidiomycota–Approaching one thousand genera |journal=The Bryologist |volume=119 |issue=4 |pages=361–416 |doi=10.1639/0007-2745-119.4.361}}</ref>
<ref name="Lumbsch">{{cite journal |last1=Lumbsch |first1=T.H. |last2=Huhndorf |first2=S.M. |date=December 2007 |title=Outline of Ascomycota – 2007 |journal=Myconet |volume=13 |pages=1–58 |url=http://archive.fieldmuseum.org/myconet/outline.asp |publisher=The Field Museum, Department of Botany |location=Chicago, USA}}</ref>
<ref name="Massalongo 1860">{{cite journal |last=Massalongo |first=A.B. |year=1860 |title=Esame comparativo di alcune genere di licheni |journal=Atti dell'Istituto Veneto Scienze |volume=5 |pages=247–276 |language=it}}</ref>
<ref name="Miadlikowska et al. 2014">{{cite journal |first1=Jolanta |last1=Miadlikowska |first2=Frank |last2=Kauff |first3=Filip |last3=Högnabba |first4=Jeffrey C. |last4=Oliver |first5=Katalin |last5=Molnár |first6=Emily |last6=Fraker |first7=Ester |last7=Gaya |first8=Josef |last8=Hafellner |first9=Valérie |last9=Hofstetter |first10=Cécile |last10=Gueidan |first11=Mónica A.G. |last11=Otálora |first12=Brendan |last12=Hodkinson |first13=Martin |last13=Kukwa |first14=Robert |last14=Lücking |first15=Curtis |last15=Björk |first16=Harrie J.M. |last16=Sipman |first17=Ana Rosa |last17=Burgaz |first18=Arne |last18=Thell |first19=Alfredo |last19=Passo |first20=Leena |last20=Myllys |first21=Trevor |last21=Goward |first22=Samantha |last22=Fernández-Brime |first23=Geir |last23=Hestmark |first24=James |last24=Lendemer |first25=H. Thorsten |last25=Lumbsch |first26=Michaela |last26=Schmull |first27=Conrad |last27=Schoch |first28=Emmanuël |last28=Sérusiaux |first29=David R. |last29=Maddison |first30=A. Elizabeth |last30=Arnold |first31=François |last31=Lutzoni |first32=Soili |last32=Stenroos |title=A multigene phylogenetic synthesis for the class Lecanoromycetes (Ascomycota): 1307 fungi representing 1139 infrageneric taxa, 317 genera and 66 families |journal=Molecular Phylogenetics and Evolution |year=2014 |volume=79 |pages=132–168 |doi=10.1016/j.ympev.2014.04.003 |pmid=24747130 |pmc=4185256}}</ref>
<ref name="Mycobank">{{cite web |url=http://www.mycobank.org/Biolomics.aspx?Table=Mycobank&Rec=97651&Fields=All |title=''Psilolechia'' |access-date=23 March 2017 |publisher=Mycobank}}</ref>
<ref name="Purvis and Halls 1996">{{cite journal |last1=Purvis |first1=O.W. |last2=Halls |first2=C. |title=A review of lichens in metal-enriched environments |journal=The Lichenologist |year=1996 |volume=28 |issue=6 |pages=571–601 |doi=10.1006/lich.1996.0052}}</ref>
<ref name="Wijayawardene et al. 2017">{{cite journal |last1=Wijayawardene |first1=Nalin N. |last2=Hyde |first2=Kevin D. |last3=Lumbsch |first3=H. Thorsten |last4=Liu |first4=Jian Kui |last5=Maharachchikumbura |first5=Sajeewa S. N. |last6=Ekanayaka |first6=Anusha H. |last7=Tian |first7=Qing |last8=Phookamsak |first8=Rungtiwa |year=2018 |title=Outline of Ascomycota: 2017 |journal=Fungal Diversity |volume=88 |issue=1 |pages=167–263 |doi=10.1007/s13225-018-0394-8}}</ref>
<ref name="Wijayawardene et al. 2020">{{cite journal |last1=Wijayawardene |first1=Nalin |last2=Hyde |first2=Kevin |last3=LKT |first3=Al-Ani |last4=S |first4=Dolatabadi |last5=Stadler |first5=Marc |last6=Haelewaters |first6=Danny |last7=Tsurykau |first7=Andrei |last8=Mesic |first8=Armin |last9=Navathe |first9=Sudhir |last10=Papp |first10=Viktor |last11=Oliveira Fiuza |first11=Patrícia |last12=Vázquez |first12=Víctor |last13=Gautam |first13=Ajay |last14=Becerra |first14=Alejandra G. |last15=Ekanayaka |first15=Anusha |last16=K. C. |first16=Rajeshkumar |last17=Bezerra |first17=Jadson |last18=Matočec |first18=Neven |last19=Maharachchikumbura |first19=Sajeewa |last20=Suetrong |first20=Satinee |year=2020 |title=Outline of Fungi and fungus-like taxa |journal=Mycosphere |volume=11 |pages=1060–1456 |doi=10.5943/mycosphere/11/1/8|doi-access=free |hdl=10481/61998 |hdl-access=free}}</ref>
}}
{{Taxonbar|from1=Q7256032|from2=Q28872150}}
Category:Lecanorales Category:Lichen genera Category:Lecanorales genera Category:Taxa named by Abramo Bartolommeo Massalongo Category:Taxa described in 1860