Paul Diederich

• D. Sc.
• Research Associate at Musée national d'histoire naturelle de Luxembourg

Catalogue des lichens et champignons lichénicoles de France métropolitaine. 4e édition revue et augmentée (2025). Édit. Claude Roux, Mirabeau (Vaucluse), 2025 p., 2 tomes.

Lijiangomyces laojunensisgen. et sp. nov. and Sclerococcum stictaesp. nov. are reported from China and identified through DNA sequence analyses (LSU, ITS, and tef1-α) and morphological characteristics. Phylogenetic analysis showed that L. laojunensis forms a distinct lineage within Mytilinidiaceae, closely related to the Mytilinidion subclade, lead...

Acremoniula cladoniae, a new lichenicolous species found on Cladonia furcata in the Netherlands, is described. It is distinguished by its large, dark brown conidia, which are 0-1-septate and measure 16-27 × 11-21 µm.

The genus Arborillus comprises a single species, A. llimonae, which is restricted to Diploschistes hosts. This species is characterized by its large, brown synnemata with a broad capitulum, brownish, phialidic conidiogenous cells, and brownish, ellipsoidal, aseptate conidia.

Actinocladium rhodosporum is a common hyphomycete frequently found overgrowing corticolous lichen thalli.

Species of Ampullifera typically inhabit foliicolous lichens in tropical or subtropical regions, attaching to host thalli via specialized hyphopodia. Six species are currently recognized. The host specificity of most species remains unclear, as hosts are often sterile and unidentified. Populations in southern Europe and Macaronesia, associated excl...

This chapter addresses the asexual stages of lichenicolous Hypocreales species with non-curved conidia. A total of 23 species are accepted, currently classified in 11 genera: Acremonium, Cylindromonium, Galloea, Globonectria, Nectriopsis, Paranectria, Patriciomyces, Pronectria, Sarocladium, Trichonectria, and Trichothecium. The sexual stages of 13...

The monospecific genus Baliomyces is characterized by its dispersed, brown, smooth conidiophores, which are reduced to the conidiogenous cell, the percurrently proliferating conidiogenous cells with several annellations, and brown, subspherical, aseptate, smooth conidia.

Bloxamia leucophthalma is a relatively common saprophyte on wood and bark, occasionally found growing over lichen thalli. It is characterized by black sporodochia with hyaline, cubic conidia that are produced endogenously in phialides.

The genus Trimmatostroma currently includes 15 obligate and one facultative lichenicolous species, most of which are unlikely to be closely related to the generic type T. salicis. Seven new species are described: T. aptrootii on Neobrownliella holochracea in China; T. harrisii on an unidentified, sterile, sorediate, corticolous lichen in Maryland,...

The monotypic genus Bicoloromyces, known from Antarctica, is distinguished from lichenicolous Trimmatostroma species by its hyphae encrusted with calcium oxalate crystals and by thick-walled conidial chains, which range in colour from pale aeruginose to dark blue or dark brown.

Two lichenicolous Berkleasmium species are currently recognized: B. parmeliellae, found on Parmeliella testacea, and the newly described B. lichenicola, occurring on an unidentified, sterile, sorediate, corticolous lichen in the USA, distinguished by its large, frequently lobed conidia.

The monospecific genus Calongeomyces is characterized by its aspergilloid conidiophores, with an elongate, septate stipe terminating in a swollen cell from which conidiogenous cells arise. The apical part, including conidiogenous cells and conidia, is enveloped by a colourless membranous sheath.

The monotypic genus Choreospora has been described for a sporodochial fungus on a foliicolous lichen, known only from its type locality in Australia. It is characterized by pale olivaceous, tetraradiate conidia produced in a dense hymenium from cylindrical, brown, percurrent conidiogenous cells.

The genus Caeruleoconidia includes three lichenicolous species characterized by sporodochial to pycnidial conidiomata, typically with a rudimentary wall, stromatic conidiophores, and mostly aseptate, often irregularly shaped, bluish green, K+ green conidia. The new C. roccellae, described from Gran Canaria in the Canary Islands on Roccella fuciform...

Six lichenicolous species of Chalara are currently recognized. Chalara lichenicola is considered heterogeneous, comprising at least four morphologically distinct species that grow on Cladonia hosts. Two lichenicolous specimens of Nagrajchalara are provisionally attributed to known saprotrophic species but may represent distinct, yet undescribed, po...

The monospecific genus Cecidiomyces is characterized by its large black sporodochia, reduced conidiophores, and large, ellipsoidal, brown conidia that are predominantly 1-septate. The type species is confined to Stereocaulon hosts and is known only from Tasmania and Macquarie Island.

The genus Cladosporium currently comprises three obligate lichenicolous species: the widespread C. licheniphilum, the new C. diploschisticola found on Diploschistes in the USA, and the new C. peltigerae, collected on Peltigera in Germany. The two common saprobic species, C. macrocarpum and C. tenuissimum, facultatively grow on lichens. Cladosporium...

The genus Cladophialophora (Herpotrichiellaceae, Chaetothyriales) currently comprises 13 obligate lichenicolous species. Additionally, ten species have been isolated from lichen thalli or apothecia, some of which may represent additional lichenicolous taxa. Six species are described as new: Cladophialophora dimorphospora on Evernia, Melanohalea and...

Two lichenicolous species of Cirrenalia are currently recognized, both characterized by blackish sporodochia and greenish brown helicoid conidia. Cirrenalia lichenicola appears to be confined to Mycoblastus caesius. The new C. pertusariicola, collected twice on Pertusaria pustulata in the USA, is distinguished by clearly delimited sporodochia and l...

Clauzadeomyces includes a single species, C. verrucosus, confined to Placopsis hosts. It is characterized by dark brown sporodochia, dark brown, verrucose conidiophores, subcylindrical percurrent conidiogenous cells, and simple, subspherical, verrucose, brown, basally truncate conidia.

The genus Codonmyces is similar to Xanthoriicola, from which it is distinguished by its tretic conidiogenesis and the formation of conidia in acropetal chains. Codonmyces lecanorae is regarded here in a broader sense, encompassing specimens with aseptate conidia and populations found on Protoparmeliopsis muralis. The new species C. canoparmeliae, d...

The genus Coniambigua is characterized by stromatic, sporodochial to pseudopycnidial conidiomata, a hyaline to pale brown conidiomatal wall, a thallic conidiogenesis, and dark brown, 0(‒1)-septate conidia. The generic type, C. phaeographidis, is confined to Phaeographis s. lat. hosts. The new C. graphidis, found on Graphis scripta in Poland, is dis...

Two facultative lichenicolous species of Corynespora are currently recognized: C. laevistipitata, which has longer conidiophores and larger 1–9-septate conidia, and the generally smaller C. thorii, which predominantly produces 1-septate conidia. Both species frequently grow together and can be difficult to distinguish macroscopically. They are diff...

Deichmannia verrucispora is a very rare species, currently known only from its type locality in Greenland. It is characterized by greyish to blackish sporodochia on the thallus of Diploschistes muscorum, discrete brown conidiogenous cells, and rough-walled, mainly 2–4-celled conidia.

The monospecific genus Dictyophrynella includes a single lichenicolous species that grows on foliicolous lichens in South America. It is characterized by brown superficial conidiophores bearing subspherical hyphopodia and integrated intercalary tretic conidiogenous cells that produce dark brown, submuriform conidia with an elongated, narrow, paler...

The genus Ellisembia includes a single lichenicolous species, E. lichenicola, which occurs on various lichen hosts in Europe and North America.

The genus Endophragmiella comprises three lichenicolous species that grow saprotrophically on decaying lichen thalli. A fourth species, E. boothii, is considered facultatively lichenicolous.

The new species Endosporoideus leprae, lichenicolous on Lepra ventosa in Florida, USA, is characterized by agglomerated blackish conidiophores and blackish brown, transversely septate conidia with hyaline walls and septa. The first conidium is produced holoblastically, while subsequent conidia are formed tretically. Older conidia disarticulate thro...

The genus Epithamnolia currently includes nine species, including the new E. khersonica, found on Cladonia foliacea and C. gracilis in Canada and Ukraine. This species is distinguished from E. rangiferinae by its longer conidiogenous cells. New phylogenetic results confirm that the generic type, E. karatyginii, is related to the other species withi...

The genus Epicoccum comprises a single facultative lichenicolous species, E. nigrum, which is known from various lichen hosts.

The monotypic genus Etayoa and the closely related genus Lichenostigma both belong to the Lichenostigmatales within the Arthoniomycetes. Etayoa trypethelii is morphologically similar to Lichenostigma species and is characterized by relatively compact conidia and external stromatic cells with a mosaic-like ornamentation.

The genus Fenestroconidia, with the single species F. caloplacae, is characterized by blackish sporodochia immersed in the apothecial disc of Calogaya saxicola s. lat., an enteroblastic conidiogenesis, and pleurogenously produced aseptate, pale brown conidia with irregularly formed lumina.

The genus Gliocephalis includes two species: the mycoparasitic G. hyalina and the lichenicolous G. pulchella. The observed variability in conidia suggests that G. pulchella may represent a species complex. G. pulchella is difficult to conserve in herbaria due to the rapid disintegration of its conidiophores.

The genus Gonatophragmium currently includes one common and widespread lichenicolous species, G. licheniphilum, which is not host-specific. G. physciae is considered a younger synonym of G. licheniphilum, based on identical ITS and nuLSU sequences as well as similar morphology.

Two lichenicolous species of Graphium are currently recognized: G. aphthosae, which primarily grows on moribund Peltigera thalli but occasionally occurs on other terricolous lichens or algae, and G. samogiticum, which is associated with terricolous lichens or algae.

The genus Feltgeniomyces is characterized by brown to blackish sporodochia, subhyaline to brown conidiophores, and phialides that exhibit distinct collarettes in some species. The conidia are predominantly brown, mainly 0–1-septate, and often truncate at the base. The genus currently includes seven lichenicolous species.

The new genus Gyalectiphila differs from Hawksworthiana and Refractohilum by possessing subcylindrical, septate conidiophores with numerous annellations along their entire length, septate conidia, and by not inducing galls on the host thallus. This genus includes three species: G. achromatica, G. intermedia and G. pluriseptata, all confined to cort...

The genus Hawksworthiana comprises a single species, H. peltigerae comb. nov. (= Ovularia peltigerae), of which Ramularia peltigericola is considered a younger synonym. This species is a common and widespread gall-inducer on Peltigera thalli. The conidiogenesis is notable: after conidial production, a new conidiogenous cell develops basally within...

The basidiomycetous genus Heteromycophaga includes two mycoparasitic species and a new lichenicolous species, H. cladoniae, described from the Azores, Denmark and France on Cladonia thalli, distinguished from the generic type by its shorter and broader conidia, and shorter conidiogenous cells.

Although the basidiomycetous genus Hormomyces has recently been established as a younger synonym of Tulasnella, four species of uncertain phylogenetic affinities remain classified within Hormomyces s. lat. The new lichenicolous species Hormomyces physciicola is described here, characterized by blackish sporodochia on the thalli and apothecia of Phy...

The monotypic genus Hobsoniopsis includes a single species, H. santessonii, which develops greyish to yellowish pink sporodochia that produce helicoid conidia on Peltigera scabrosa in Eurasia and P. neopolydactyla in North America. Phylogenetic results place this genus within the Teratosphaeriaceae in the Mycosphaerellales.

The genus Illosporium currently includes the single species I. carneum, which is lichenicolous on Peltigera thalli. This species is relatively common and has a global distribution. The prevailing notion that I. carneum represents the asexual stage of Pronectria robergei is incorrect. Phylogenetic analyses of ITS and nuLSU sequences demonstrate that...

The monotypic genus Isthmoconidium closely resembles species of Cladophialophora, but is distinguished by its unique conidiogenous cells and violaceous, non-catenate conidia. The sole species, I. bacidiicola, is known exclusively from Bermuda, where it inhabits the thallus of Bacidia heterochroa.

The genus Intralichen comprises intrahymenial hyphomycetes that produce brown, catenate conidia. Given that this simple growth form may have evolved multiple times, we anticipate a substantial number of partly unrelated species that can only be differentiated using molecular data. Therefore, we recommend that the use of Intralichen names be restric...

The genus Kalchbrenneriella, represented by the single species K. cyanescens, forms a distinctive whitish tomentum that completely covers infected Usnea specimens. It produces catenate, pale greyish or brownish conidia with a rugose wall.

The genus Illosporiopsis comprises a single species, I. christiansenii, which is characterized by large, pink, lichenicolous sporodochia and hyaline, multicellular, helicoid conidia. It is commonly found on corticolous lichens, particularly on Physcia species, and frequently extends over the surrounding bark.

The genus Koordersiella comprises five species that grow on the thalli of foliicolous lichens. Koordersiella insectivora is the only species known from Europe and Macaronesia, where it is confined to Gyalectidium. The hosts of most tropical Koordersiella specimens remain unidentified.

The genus Katherinomyces includes the single species K. cetrariae, which is characterized by pycnidium-like sporodochia, a holoblastic conidiogenesis, and brown, ellipsoidal, aseptate, verruculose conidia. It develops on necrotic thallus parts of various unrelated lichen hosts.

Lambinonia strigulae, the sole species in the genus, grows on foliicolous lichens Puiggariella nemathora, Strigula buxi and S. nitidula. It is distinguished by its dark brown to black sporodochia, resembling basidiomata of a Tremella, and tiny, aseptate, hyaline conidia produced endogenously within phialides with a broad collarette.

Lichenopuccina poeltii is characterized by convex, black, shiny sporodochia that develop on the thalli of Parmelia s. str. species, producing hyaline, thick-walled conidia with up to three distosepta.

The genus Lawreya comprises a single species, L. glyphidiphila, which is most commonly found on Glyphis scyphulifera but is also reported from Graphis and Trypethelium. Molecular data place Lawreya within the Teratosphaeriaceae in the Mycosphaerellales, though it lacks known close relatives.

The genus Leightoniomyces comprises two blackish, synnematous species that may be considered facultatively lichenicolous, likely associated with biofilms covering lichen thalli and other substrata. The type species, L. phillipsii, exhibits enteroblastic, tretic conidiogenesis (previously misinterpreted as percurrent proliferation), brown, ampullifo...

Lichenopenicillus versicolor is a distinctive hyphomycete characterized by purplish synnemata and long, hyaline, septate, acicular conidia. It is known only from Ecuador, where it occurs on the thalli of Sticta and Leptogium species.

The genus Lichenobactridium includes a single lichenicolous species, L. pertusariae, found on Lepra multipuncta and Pertusaria pertusa. It is characterized by black sporodochia, hyaline, filiform, branched conidiophores, a holoblastic conidiogenesis, and large, hyaline, transseptate conidia.

The genus Lichenostigma s. str. currently comprises six species. Of these, L. alpinum, L. chlaroterae and L. maureri are widespread and abundant, whereas the remaining three species are rare and poorly known. The new combination Lichenostigma minutum is introduced for Phaeosporobolus minutus. Phylogenetic analyses indicate the potential existence o...

The genus Lichenostella currently includes two lichenicolous species. Lichenostella hypotrachynae is a distinctive fungus forming black sporodochia on the thallus of Hypotrachyna species in South America, producing hyaline, tetrahedric conidia. The newly described Lichenostella griseofusca, found in the Netherlands and Denmark, forms effuse greyish...

The genus Milospium is characterized by aseptate, lobed conidia with an unevenly thickened wall. It currently includes two lichenicolous species: M. graphideorum p. p. associated with Dirina and M. lacoizquetae, which occurs on Cladonia.

The previously invalidly published genus and species Llanorella ramalinae are validated here. This species is common and widespread on various Ramalina species. Its superficial network of hyphae resembles those of Sphaerellothecium and Trimmatostroma species; however, it can be distinguished by the occasional presence of sterile bulbils and of spor...

The genus Microcera comprises a single lichenicolous species, M. physciae, with M. lichenicola regarded as a synonym. This species is widespread, primarily occurring on corticolous lichens, yet remains underrecorded. Additionally, Fusarium sampaioi is lectotypified based on basidiomycetous bulbils found in the original specimen.

The genus Minutoexcipula comprises 14 known obligate lichenicolous species, with conidiomata ranging from pycnidioid in their early stages to broadly sporodochioid at maturity. Most species possess an excipular layer characterized by strongly swollen and unevenly pigmented exposed cells. The conidiophores vary from aseptate to septate and branched....

The genus Monodictys currently comprises five obligate lichenicolous species, including the new M. pachnolepiae, found on Pachnolepia pruinata in California, USA, as well as one facultative lichenicolous species, M. cellulosa. Lichenized populations of M. cellulosa auct. are considered here as the asexual stage of Arthonia vinosa. Phylogenetic evid...

The genus Neobaryopsis includes a single lichenicolous species, N. andensis, which is confined to Lobariella species in South America. The sexual, perithecioid stage is frequently associated with a synnematous asexual stage. This species is classified within the Cordycipitaceae in the Hypocreales.

The genus Nigromacula comprises a single species that produces pycnidioid conidiomata, which rapidly become cupulate to sporodochial. This species is characterized by the formation of dark brown, catenate, predominantly 1-septate conidia. It primarily grows on hosts of the genus Hypotrachyna.

The genus Nigropuncta comprises the single taxon N. rugulosa, which is lichenicolous on species of Bellemerea, frequently inhibiting the production of apothecia in its hosts. The conidiomata are initially pycnidioid but rapidly become cupulate to almost sporodochial. Nigropuncta groenlandica is recognized as a synonym of N. rugulosa.

The genus Psammina currently comprises nine species, of which five are facultative lichenicolous. The newly described P. angustata, found in the Netherlands, is distinguished from P. simplex by its larger conidia and longer conidial arms, which taper distinctly towards the apex. A phylogenetic analysis based on ITS, nuLSU and mtSSU sequences places...

The lichenicolous species Pseudocercospora lichenum has been frequently reported in the literature; however, some records pertain to different, similar species. A recent specimen from Italy is confidently attributed to P. lichenum. Additionally, two new species are described: P. normandinae, found in Austria and Scotland on Normandina pulchella, an...

The new species Paraëpicoccum hypotrachynae is characterized by the presence of numerous hyaline paraphyses intermixed with the conidiophores, distinguishing it from the generic type P. amazonense. The species has been recorded from Madeira, Spain and the UK on Hypotrachyna species. The new species P. ocellulariae is differentiated from both by its...

Within the predominantly saprobic genus Ramichloridium, two species are known to be lichenicolous: R. cladoniicola, which occurs on Cladonia species, and R. tropicum, which is associated with a sterile crustose lichen with a trentepohlioid photobiont.

The new synnematous genus and species Pseudophaeoisaria cladoniae is described from Cladonia polydactyla in the UK. It is distinguished from the similar Phaeoisaria by the determinate synnemata with a distinct, brown capitulum, and the short catenate, brown conidia.

Five species from the genera Reconditella (R. physconiarum), Roselliniella (R. cladoniae, R. eriodermicola, R. stereocaulorum) and Roselliniopsis (R. tartaricola) possess an asexual, hyphomycetous stage that often occurs independently of the sexual stage. These species have blackish, erect conidiophores that produce at their apex either large ellip...

Refractohilum s. str. comprises a single species, R. galligenum, which induces galls on the thallus of Nephroma species in Europe, Macaronesia, North America and Oceania. Other lichenicolous species previously classified in Refractohilum are now placed in Gyalectiphila and Hawksworthiana. The non-lichenicolous R. mycophilum does not belong to Refra...

The genus Sclerococcum comprises over 80 species, including 64 lichenicolous taxa, of which 24 possess an asexual hyphomycetous stage. Among these, 21 species produce aseptate, 1-septate, multiseptate or muriform conidia in dense, dark brown to blackish sporodochia, while their sexual stages remain unknown. From the remaining three species, S. loba...

The monospecific genus Scolecofusarium encompasses the saprotrophic fungus S. ciliatum, which occasionally overgrows lichens. The name Fusarium peltigerae is recognized as a synonym of S. ciliatum.

The monotypic genus Sessiliospora has been described for a lichenicolous hyphomycete that grows on foliicolous lichens, known exclusively from the type specimen. It resembles Dictyophrynella but is distinguished by the absence of hyphopodia and the transversely septate conidia.

Two lichenicolous species of Sporidesmium are currently recognized: the common and widespread S. usneae, confined to Usnea hosts, and the poorly known S. lichenicola, which has been collected only once on Leptogium in Venezuela.

The genus Taeniolella currently comprises 32 obligate lichenicolous species, including the newly described T. diminuta, which forms sporodochia on Fissurina in Mauritius, and T. fissurinae, found on Fissurina dumastii in the Azores. Trimmatostroma commonii and T. glebarum are transferred to Taeniolella based on morphological and (for T. commonii) m...

The genus Sporidesmiella includes a single lichenicolous species, S. lichenophila, confined to Ramalina hosts; it is here reported for the first time from North America, the Indian Ocean and Oceania. The morphological differences with Sporidesmiella s. str. suggest that it may not be congeneric.

Two lichenicolous synnematous species of Stilbella are currently recognized: S. eichlerae, found once on the thallus of Cetraria islandica in Germany, and the newly described S. helmingeri, collected from Cladonia pocillum in Luxembourg.

The new genus and species Stipititheca pyrenulae is distinct from Acrodictys, Acrogenospora and Junewangia by initially unicellular conidia surrounded by a thick, subhyaline sheath that darkens over time, while the interior transforms into brownish ellipsoidal cells that are ultimately released together.

The asexual hyphomycetous stage of Taitaia aurea has been identified in South Africa and is both described and illustrated. A phylogenetic analysis using mtSSU sequences places the genus Taitaia close to the lichenicolous genus Corticifraga in the Gomphillaceae (Graphidales).

The genus Teratosperma currently comprises 14 species, of which two are lichenicolous. Both are distinguished from the generic type by conidiophores with a conspicuous, irregularly lobed foot cell, and by the production of hyaline, acicular microconidia either from the apical conidial cell or the basal conidial appendages. Teratosperma lichenicola...

The diverse genus Venturia, predominantly comprising phytopathogenic or saprobic species, includes one obligate lichenicolous species, the newly described V. lichenophila, reported from Physcia, Physconia and Ramalina hosts in Italy and Luxembourg. Additionally, V. peltigericola has been isolated from a Peltigera thallus and may also be lichenicolo...

A survey of the terminology of vegetative structures and asexual stages of hyphomycetes is provided, including brief definitions and synonyms. Accepted and preferred terms are highlighted in bold.

The genus Trichoconis currently comprises two lichenicolous species: T. lichenicola, confined to Peltigera species, and T. physciicola, known from various corticolous hosts. Trichoconis hafellneri is regarded as a synonym of T. physciicola.

The genus Zevadia with the only species Z. peroccidentalis produces convex, blackish sporodochia on the thalli of Usnea species. It is characterized by an enteroblastic conidiogenesis and dark brown, 1–3-septate conidia that fragment into aseptate conidia with a rough or warted surface.

The cladosporium-like genus Verrucocladosporium, belonging to the Cladosporiaceae within the Cladosporiales, is typified by a lichenicolous fungus isolated from Dirina massiliensis. Sterile colonies that do not produce conidia have been observed in the Netherlands and the UK on the same host. The genus also includes the lichenicolous species V. roc...

The genus Xanthoriicola comprises a single species, X. physciae, which is a common and widespread parasite of Xanthoria parietina. It is recognized by the blackening of host apothecia, and is distinguished by a phialidic conidiogenesis, producing aseptate, globose, brown, verrucose conidia.

The new species Xylohyphopsis xanthoriicola, lichenicolous on Xanthoria parietina in France, closely resembles the generic type, X. curta, from which it can be distinguished by its distinctly smaller conidia.

You may order this volume directly at the National Museum of Natural History (https://www.mnhn.lu/science/flora-of-lichenicolous-fungi/?lang=en) at the price of 40 €. Abstract The second volume of the Flora of Lichenicolous Fungi focuses on hyphomycetes, a group of asexual fungi in which conidia are not formed within complex conidiomata, such as p...

Résumé : Mise à jour de la troisième édition du Catalogue des lichens de France dans l’attente de sa quatrième édition. Changements nomenclaturaux importants, plus particulièrement chez les Aspicilia s. l. et les Xanthoria. Liste commentée de 87 espèces et taxons infraspécifiques nouvellement trouvés en France. Appendice taxonomique : classificatio...

Résumé : Description d’une nouvelle espèce de champignon lichénicole non lichénisé, Zwackhiomyces bagliettoanus Brien, Cl. Roux et P. Diederich, parasite du thalle de Toniniopsis bagliettoana. Comparaison de cette nouvelle espèce avec les autres Zwackhiomyces connus, en particulier avec Z. socialis dans lequel elle était jusqu’ici incluse. ========...

Résumé : Description d’une nouvelle espèce de champignon lichénicole non lichénisé, Zwackhiomyces bagliettoanus Brien, Cl. Roux et P. Diederich, parasite du thalle de Toniniopsis bagliettoana. Comparaison de cette nouvelle espèce avec les autres Zwackhiomyces connus, en particulier avec Z. socialis dans lequel elle était jusqu’ici incluse. ========...

Recent finds of lichenicolous fungi from the Netherlands are described and discussed. Echinothecium micareae spec. nov. and Lichenochora verrucariae spec. nov. are described as new for science. An additional 31 species are reported for the first time from the Netherlands: Abrothallus cladoniae, Arthonia diploiciae, A. rinodinicola, Cladophialophora...

A lichenicolous fungus forming large black, vertically elongate, campylidia-like conidiomata on the thallus of Ochrolechia was recently collected in Austria, Mexico and the USA. The conidia are so remarkable in being multiappendiculate that initially no existing fungal genera appeared to be suitable for its description. Nevertheless, molecular phyl...

Zhurbenko, M. P., Diederich, P. & Braun, U. 2023. Randlanea usneicola gen. & sp. nov., a new lichenicolous coelomycete on Usnea from the Russian Caucasus. – Herzogia 36: 497–503. Randlanea usneicola gen. & sp. nov., found on Usnea longissima, is described, illustrated, and compared with other morphologically similar genera of coelomycetes. The new...