{{Short description|Genus of fungi}} {{Use dmy dates|date=October 2024}} {{Use British English|date=October 2024}} {{Automatic taxobox | image = | taxon = Weddellomyces | authority = D.Hawksw. (1986) | type_species = ''Weddellomyces epicallopisma'' | type_species_authority = (Wedd.) D.Hawksw. (1986) | synonyms_ref = <ref name="Species Fungorum synonymy"/> | synonyms = *''Xenosphaeria'' {{au|Trevis. (1860)}} | subdivision_ranks = | subdivision = }}
'''''Weddellomyces''''' is a genus of lichenicolous (lichen-dwelling) fungi in the family Dacampiaceae. It comprises 12 species.<ref name="CoL"/><ref name="Wijayawardene et al. 2022"/>
==Taxonomy==
The genus was circumscribed by David L. Hawskworth in 1986, with ''Weddellomyces epicallopisma'' assigned as the type, and at the time, only species.<ref name="Hawksworth 1986"/> Since its initial description, the genus has expanded to include 12 recognised species.<ref name="CoL"/>
The genus name ''Weddellomyces'' honours Dr. Hugh Algernon Weddell (1819–1877), a notable 19th-century physician and botanist. Weddell made significant contributions to French lichenology and was the original collector of the type species for this genus. Weddell had originally classified the species in ''Verrucaria'' in 1873.<ref name="Hawksworth 1986"/>
Weddellomyces shows some similarities to other fungal genera such as ''Zopfiofoveola'', ''Dacampia'', and ''Pyrenidium'', but is distinguished by its unique combination of morphological features. These include its distinctive ascomata structure, ascus shape, and ascospore characteristics.<ref name="Hawksworth 1986"/>
==Description==
''Weddellomyces'' is a genus of lichenicolous fungi, meaning its species grow on lichens. The genus is characterised by several distinctive features. The fruiting bodies, or ascomata, are nearly spherical and black in colour. They have a unique structure with the upper part being cephalothecoid, composed of plates that can split apart, while the lower part consists of irregularly arranged cells. This structure allows the ascomata to open in an irregular manner. Within the ascomata, ''Weddellomyces'' species possess a {{lichengloss|hamathecium}}, which refers to the sterile tissues between the spore-producing structures. In this genus, the hamathecium is composed of {{lichengloss|pseudoparaphyses}}, thread-like structures that grow between the asci. The asci themselves are elongated, either slightly cylindrical or club-shaped, and feature a double wall, a characteristic known as {{lichengloss|bitunicate}}. Each ascus typically contains eight spores.<ref name="Hawksworth 1986"/>
The {{lichengloss|ascospores}} of ''Weddellomyces'' are ellipsoid in shape and golden brown in colour. They usually have three septa (cross-walls) dividing them into compartments, though some may have only one septum. The surface of these spores is slightly warty ({{lichengloss|verruculose}}).<ref name="Hawksworth 1986"/>
==Species==
{{As of|2024|October}}, Species Fungorum (in the Catalogue of Life) accept 12 species of ''Weddellomyces''. * ''Weddellomyces aspiciliicola'' {{au|Alstrup (1992)}}<ref name="Alstrup 1992"/> – host: ''Lobothallia''<ref name="Diederich et al. 2018"/> * ''Weddellomyces epicallopisma'' {{au|(Wedd.) D.Hawksw. (1986)}} – host: ''Protoblastenia'', ''Pyrenodesmia'' and ''Variospora''<ref name="Diederich et al. 2018"/> * ''Weddellomyces erythrocarpae'' {{au|Nav.-Ros. & Cl.Roux (1995)}}<ref name="Navarro-Rosinés & Roux 1995"/> – host: ''Kuettlingeria erythrocarpa''<ref name="Diederich et al. 2018"/> * ''Weddellomyces gasparriniae'' {{au|(C.W.Dodge) D.Hawksw. & Iturr. (2006)}} – host: ''Caloplaca''<ref name="Diederich et al. 2018"/> * ''Weddellomyces heterochrous'' {{au|Nav.-Ros. & Cl.Roux (1995)}}<ref name="Navarro-Rosinés & Roux 1995"/> – host: ''Aspicilia''<ref name="Diederich et al. 2018"/> * ''Weddellomyces macrosporus'' {{au|D.Hawksw., Renob. & Coppins (1990)}}<ref name="Hawksworth 1990"/> – host: ''Circinaria calcarea'' and ''Lobothallia radiosa'' <ref name="Diederich et al. 2018"/> * ''Weddellomyces pachyosporicola'' {{au|Nav.-Ros. & Cl.Roux (1995)}}<ref name="Navarro-Rosinés & Roux 1995"/> – host: ''Aspicilia''<ref name="Diederich et al. 2018"/> * ''Weddellomyces periphericus'' {{au|(Taylor) Alstrup & D.Hawksw. (1990)}} – host: ''Pertusaria pseudocorallina''<ref name="Diederich et al. 2018"/> * ''Weddellomyces pertusariicola'' {{au|Halıcı (2010)}}<ref name="Halici 2010"/> – host: ''Varicellaria lactea''<ref name="Diederich et al. 2018"/> * ''Weddellomyces protearius'' {{au|Nav.-Ros. & Cl.Roux (1997)}}<ref name="Navarro-Rosinés & Roux 1997"/> – host: ''Leproplaca proteus'' and ''Rusavskia elegans''<ref name="Diederich et al. 2018"/> * ''Weddellomyces turcicus'' {{au|Halıcı & Orange (2006)}}<ref name="Halici et al. 2006"/> – host: ''Acarospora''<ref name="Diederich et al. 2018"/> * ''Weddellomyces xanthoparmeliae'' {{au|Calat. & Nav.-Ros. (1998)}}<ref name="Calatayud & Navarro-Rosinés 1998"/> – host: ''Xanthoparmelia''<ref name="Diederich et al. 2018"/>
Two species once placed in this genus have since been reclassified:
* ''Weddellomyces geographicicola'' {{au|(Arnold) Alstrup & D.Hawksw. (1990)}} is now known as ''Opegrapha geographicicola''<ref name="IF: Weddellomyces geographicicola"/> * ''Weddellomyces tartaricola'' {{au|(Linds.) Alstrup & D.Hawksw. (1990)}} is now known as ''Pseudopyrenidium tartaricola''.<ref name="IF: Weddellomyces tartaricola"/>
==References== {{Reflist|colwidth=30em|refs=
<ref name="Alstrup 1992">{{cite journal |last1=Alstrup |first1=V. |year=1992 |title=''Weddellomyces aspiciliicola'', a new lichenicolous fungus found in Czechoslovakia |journal=Folia Geobotanica et Phytotaxonomica |volume=27 |issue=2 |pages=185–187 |doi=10.1007/BF02856250}}</ref>
<ref name="Calatayud & Navarro-Rosinés 1998">{{cite journal |last1=Calatayud |first1=Vicent |last2=Navarro-Rosinés |first2=Pere |year=1998 |title=''Weddellomyces xanthoparmeliae'' sp. nov., and additions to the chorology of other species of the genus |journal=Mycotaxon |volume=69 |pages=503–514 |url=http://www.cybertruffle.org.uk/cyberliber/59575/0069/0503.htm}}</ref>
<ref name="CoL">{{Catalogue of Life |id=87PY |title=''Weddellomyces'' |access-date=7 October 2024}}</ref>
<ref name="Diederich et al. 2018">{{cite journal |last1=Diederich |first1=Paul |last2=Lawrey |first2=James D. |last3=Ertz |first3=Damien |title=The 2018 classification and checklist of lichenicolous fungi, with 2000 non-lichenized, obligately lichenicolous taxa |journal=The Bryologist |volume=121 |issue=3 |year=2018 |pages=340–425 [362] |doi=10.1639/0007-2745-121.3.340 |url=https://www.researchgate.net/publication/328374342}}</ref>
<ref name="Halici et al. 2006">{{cite journal |last1=Halici |first1=M.Gökhan |last2=Orange |first2=Alan |last3=Aksoy |first3=Ahmet |year=2006 |title=''Weddellomyces turcicus'', a new species on a grey ''Acarospora'' from Turkey |journal=Mycotaxon |volume=94 |pages=249–252 |url=http://www.cybertruffle.org.uk/cyberliber/59575/0094/0249.htm}}</ref>
<ref name="Halici 2010">{{cite journal |last=Halici |first=M.G. |year=2010 |title=''Weddellomyces pertusariicola'' (Ascomycota, Dacampiaceae), a new species growing on ''Pertusaria lactea'' in Turkey |journal=Annales Botanici Fennici |volume=47 |issue=2 |pages=148–150|doi=10.5735/085.047.0211 }}</ref>
<ref name="Hawksworth 1986">{{cite journal |last=Hawksworth |first=D.L. |year=1986 |title=Notes on British lichenicolous fungi: V |journal=Notes from the Royal Botanical Garden Edinburgh |volume=43 |pages=497–519 |url=https://archive.org/details/notes-from-royal-botanic-garden-edinburgh-43-003-497-519}}</ref>
<ref name="Hawksworth 1990">{{cite journal |last=Hawksworth |first=D.L. |year=1990 |title=Notes on British lichenicolous fungi: VI |journal=Notes from the Royal Botanical Garden Edinburgh |volume=46 |pages=391–403}}</ref>
<ref name="Navarro-Rosinés & Roux 1995">{{cite journal |last1=Navarro-Rosinés |first1=Pere |last2=Roux |first2=Claude |year=1995 |title=Le genre ''Weddellomyces'' (Dothideales, Dacampiaceae) en Catalogne et en Provence |journal=Mycotaxon |volume=53 |pages=161–187 |language=fr |url=http://www.cybertruffle.org.uk/cyberliber/59575/0053/0161.htm}}</ref>
<ref name="Navarro-Rosinés & Roux 1997">{{cite journal |last1=Navarro-Rosinés |first1=Pere |last2=Roux |first2=Claude |year=1997 |title=''Weddellomyces protearius'' sp. nov. et ''Lichenochora xanthoriae'', champignons lichénicoles non lichénisés parasites de ''Caloplaca proteus'' |journal=Mycotaxon |volume=61 |pages=433–440 |language=fr |url=http://www.cybertruffle.org.uk/cyberliber/59575/0061/0433.htm}}</ref>
<ref name="Species Fungorum synonymy">{{cite web |title=Synonymy. Current Name: ''Weddellomyces'' D. Hawksw., Notes R. bot. Gdn Edinb. 43(3): 511 (1986)|url=https://www.speciesfungorum.org/Names/SynSpecies.asp?RecordID=25083 |publisher=Species Fungorum |access-date=7 October 2024}}</ref>
<ref name="IF: Weddellomyces geographicicola">{{cite web |title=Record Details: ''Weddellomyces geographicicola'' (Arnold) Alstrup & D. Hawksw. [as 'geographicola'], Meddr Grønland, Biosc. 31: 74 (1990) |url=https://www.indexfungorum.org/Names/NamesRecord.asp?RecordID=631516 |publisher=Index Fungorum |access-date=7 October 2024}}</ref>
<ref name="IF: Weddellomyces tartaricola">{{cite web |title=Record Details: ''Weddellomyces tartaricola'' (Linds.) Alstrup & D. Hawksw., Meddr Grønland, Biosc. 31: 74 (1990) |url=https://www.indexfungorum.org/Names/NamesRecord.asp?RecordID=125587 |publisher=Index Fungorum |access-date=7 October 2024}}</ref>
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Category:Pleosporales Category:Dothideomycetes genera Category:Taxa described in 1986 Category:Lichenicolous fungi Category:Taxa named by David Leslie Hawksworth