Jiří Malíček

Acarospora peltata was synonymized by A. H. Magnusson with the South American species A. strigata . We do not recognize the synonymy. Acarospora peltata is the common North American species. Acarospora strigata is relatively rare in South America. Acarospora peltastica is recognized as a rare southern California species with globose ascospores (3.5–)4–5 μm in diameter. We describe the new species A. lactea from Montana, Nevada and Utah. We revise and publish new descriptions of A. coloradiana , A. nevadensis , and A. utahensis . A key is published for the six members of the A. strigata group in North America.

In this contribution, new data concerning algae, bryophytes, fungi and lichens of the Italian flora are presented. It includes new record and confirmations for the algal genera Chara , Closterium , and Ulva , the bryophyte genera Buxbaumia , Campylopus , Crossidium , Cryphaea , Dicranella , Dicranum , Flexitrichum , Geheebia , Grimmia , Lewinskya , Ptychostomum , Riccia , Schistidium , and Taxiphyllum , the fungal genera Clavaria , Inocybe , Lepiota , Phacopsis , Phloeomana , Tremella , and Zyzygomyces , and the lichen genera Anema , Bagliettoa , Cladonia , Gyalecta , Lepraria , Phaeophyscia , Polyblastia , Porina , Psilolechia , Scytinium , Swinscowia , Synalissina , and Thyrea .

In this contribution, new data concerning algae, bryophytes, fungi and lichens of the Italian flora are presented. It includes new records, confirmations or exclusions for the algal genera Chara , Hildenbrandia , Pleurotaenium , and Spirogyra , the bryophyte genera Braunia , Buxbaumia , Crossidium , Dicranum , Flexitrichum , Tortella and Ulota , the fungal genera Agaricus , Coltricia , Cortinarius , Gliophorus , Leucocoprinus , Leucotelium , Microbotryum , Phaeocalicium , Phragmidium , and Polycoccum , and the lichen genera Anisomeridium , Arthonia , Chaenotheca , Cladonia , Graphis , Leptochidium , Melanelia , Rinodina , Scoliciosporum , Synalissa , Toninia and Trapelia .

This paper reports the first occurrence of basidiolichen Multiclavula corynoides (Agaricomycetes, Clavulinaceae) in the Czech Republic, collected in the Šumava Mountains near Železná Ruda. Additionally, we discuss in detail a remarkable find of M. mucida growing atypically on soil in the Šumava foothills. In Europe, three species of Multiclavula are known: M. corynoides, M. mucida, and M. vernalis. Multiclavula mucida is traditionally considered a lignicolous species, typically found on decaying wood in old-growth forests, while M. corynoides is known to inhabit bare soil, often in association with bryophytes. Multiclavula vernalis, a boreo-montane terricolous species, has not yet been recorded in the Czech Republic. The identity of both specimens was confirmed by the nrITS DNA barcode. The discovery of M. mucida on soil is particularly surprising, as substrate type – wood versus soil – often serves as a crucial criterion for distinguishing the species and M. corynoides in widely used identification keys. The paper further discusses the macroscopic and microscopic characteristics of European Multiclavula species, highlighting small inconsistencies in diagnostic features, such as basidiocarp colour and spore dimensions, in various sources. Finally, we provide an identification key to these species.

In this contribution, new data concerning algae, bryophytes, fungi and lichens of the Italian flora are presented. It includes new records, confirmations or exclusions for the algal genera Cladophoropsis, the bryophyte genera Bryum, Cinclidotus, Dicranella, and Pulvigera, the fungal genera Ascocoryne, Calycina, Echinoderma, Hohenbuehelia, Laccaria, Lasiosphaeria, Leucocoprinus, Neodasyscypha, Propolis, Psathyrella, and Sclerococcum, and the lichen genera Acarospora, Bryoplaca, Caloplaca, Candelariella, Catapyrenium, Cladonia, Lecanora, Lepra, Monerolechia, Mycobilimbia, Pertusaria, Pycnora, Spilonema, Thelopsis, and Xylopsora.

Corticolous sorediate Candelariella represent, at least in Europe, a widespread group of species, often predominant in epiphytic communities. Many specimens are challenging to identify since apothecia are generally lacking and names have been frequently misapplied in the past. Here, we studied the morphology and molecular data (ITS nrDNA sequences) of corticolous sorediate Candelariella specimens, with the aim of determining how many species occur in Europe and which names should be applied. We distinguish worldwide five taxa from this group that are widespread and currently well supported by both morphological and molecular data. These include three 8-spored species (Candelariella reflexa, C. rubrisoli and C. xanthostigmoides) and two polyspored species (C. efflorescens and Candelariella pulchella sp. nov., the latter characterized by coarser soredia, larger apothecia with a persistent proper margin and broader paraphyses tips). Four of these species (all except C. xanthostigmoides) occur in Europe. European specimens previously identified as C. xanthostigmoides belong to C. rubrisoli.Candelariella makarevichiae and C. subsquamulosa are considered synonyms of C. xanthostigmoides.Candelariella sorediosa, C. flavosorediata and C. magellanica (the latter two not reported from Europe) remain poorly known species for which molecular data is currently lacking and they require further study. Full descriptions and a key to the species discussed are provided.

Acarospora alba, A. indistincta, A. sharnoffii, and A. tejonensis are described from California. Sarcogyne fasciculata is described from California and New Mexico. Sarcogyne coeruleonigricans is reported new for California. Sarcogyne lapponica is recognized as a synonym of Acarospora lapponica, its basionym. We report 127 described species of Acarosporaceae for North America. We verified 62 species of Acarosporaceae from California.

Leprocaulon inexpectatum is described here as a new lichen species and the fourth member of the genus known from Europe. It is characterized by the crustose-granulose, blue-grey to bluish green thallus composed of ±discrete, soredia-like granules c. 45–70 μm in diameter, and the production of usnic acid and zeorin. Based on ITS rDNA, the lichen is closely related to the saxicolous American species L. beechingii. The new species is reported here from numerous localities in north-western Italy. It occurs on the bark of oaks, chestnut, and black locust in open deciduous forests, often in floodplain ecosystems. Our investigation of its photobiont identity using ITS, 18S and rbcL demonstrated that its symbiotic partner represents an undescribed species within the genus Symbiochloris (Trebouxiophyceae). We provide an identification key to sterile crustose sorediate lichens containing usnic acid and zeorin found in Europe.

First Ukrainian records of lichens and lichenicolous fungi from Carpathian primeval forests. - abstract

Malíček, J., Palice, Z., Bouda, F., Peksa, O., Steinová, J., Syrovátková, L. & Vondrák, J. 2024. Flechten in der Umgebung der Sajathütte und Eisseehütte (Hohe Tauern, Österreich) im Jahr 2022. – Herzogia 37: 300 – 319. Im Rahmen von vier lichenologischen Exkursionstagen in der Umgebung der Sajathütte und der Eisseehütte (nordwestlich von Prägraten, Hohe Tauern) wurden 428 Flechentaxa, 13 lichenicole Pilze und 2 flechtenassoziierte Pilze nachgewiesen. Fünf Arten (Catillaria cf. nigroisidiata, Micarea fennica, Microcalicium loraasii, Placynthium pulvinatum und Rinodina cf. calcigena) gelten als Neufunde für die Alpen. Zusätzlich zu den genannten Sippen sind folgende zehn Flechten neu für Österreich: Caloplaca approximata, C. fuscorufa, Candelariella aggregata, Halecania spodomela, Lempholemma cladodes, L. isidioides, Porina rosei, Protoparmelia leproloma, Protoparmeliopsis bolcana und Stereocaulon capitellatum. Das Gebiet beherbergt eine außerordentlich reiche Flechtenvielfalt, wobei die Kombination von Hochgebirgselementen mit kontinentalen oder sogar xerothermen Arten besonders bemerkenswert ist.