Leif Tibell

Uppsala University | UU · Department of Organismal Biology

Calicioids form a research field that has encompassed ascomycetous fungi with stalked ascomata similar to those of the lichen genus Calicium. Early generic circumscriptions of calicioid lichens and fungi were mainly based on morphological and secondary chemistry information. After the introduction of molecular data, taxonomy in the group has been r...

Calicioids form a research field that has encompassed ascomycetous fungi with stalked ascomata similar to those of the lichen genus Calicium. Early generic circumscriptions in calicioid lichens and fungi were mainly based on morphological and secondary chemistry information. After the introduction of molecular data, taxonomy in the group has been r...

Early research on marine fungi was mostly descriptive, with an emphasis on their diversity and taxonomy, especially of those collected at rocky shores on seaweeds and driftwood. Subsequently, further substrata (e.g. salt marsh grasses, marine animals, seagrasses, sea foam, seawater, sediment) and habitats (coral reefs, deep-sea, hydrothermal vents,...

This study investigated the molecular, chemical and morphological variation in the Usnea pectinata aggregate using 42 specimens, 22 from Tanzania and 20 from São Tomé and Príncipe. A total of 31 sequences (13 ITS, 13 nuLSU and 5 RPB 1) were generated. The results are presented in two phylogenies: first a three-markers ‘backbone’ phylogeny for the U...

Our studies on lignicolous aquatic fungi in Thailand, Sweden, and the UK resulted in the collection of three new Halobyssothecium species (H. bambusicola, H. phragmitis, H. versicolor) assigned to Lentitheciaceae (Pleosporales, Dothideomycetes). Multi-loci phylogenetic analyses of the combined large subunit, small subunit, internal transcribed spac...

Vast parts of the Baltic Sea have been mycologically neglected and are still awaiting exploration. Here we summarise earlier records of marine fungi from the Baltic, supplementing them with discoveries from fieldwork in Sweden in 2019. Although marine fungal diversity is clearly attenuated in the brackish water of the Baltic Sea, a substantial numb...

A total of 26 crustose calicioid lichens and fungi were found in Tanzania. Most of them belong to a group of species with wide distributions in cool areas of both hemispheres and occasional occurrence in high mountains at low latitudes. In Tanzania calicioids mainly occur in the middle and upper forest zones and their niches are found on the bark o...

This paper documents six new saprobic marine fungi and one new genus based on morphology and multi-gene phylogenies. Three Dothideomycetes, and members of the Pleosporales, are introduced: Pseudomassariosphaeria triseptata sp. nov. was recognized as a mangrove species in Amniculicolaceae, and Salsuginea phoenicis sp. nov. was discovered as a second...

Marine filamentous fungi have been little studied in Sweden, which is remarkable given the depth and width of mycological studies in the country since the time of Elias Fries. Seventy-four marine fungi are listed for Sweden based on historical records and recent collections, of which 16 are new records for the country. New records for the country a...

Several Usnea species in subgenus Eumitria (Parmeliaceae, lichenized Ascomycota) have been described from East Africa in the past decades. These have been based on morphology and chemistry data while molecular studies remain very limited. In this paper we are for the first time publishing phylogenetic analyses along with morphological and chemical...

A new species of Chaenotheca , C. biesboschii , has been found in the freshwater tidal area of the Biesbosch in the Netherlands, a national park well known for harbouring several rare and threatened mosses and lichens. A phylogenetic analysis of the ITS region revealed some strongly supported infrageneric clades in Chaenotheca which were given info...

Nomenclatural type definitions are one of the most important concepts in biological nomenclature. Being physical objects that can be re-studied by other researchers, types permanently link taxonomy (an artificial agreement to classify biological diversity) with nomenclature (an artificial agreement to name biological diversity). Two proposals to am...

This paper is the seventh in the Fungal Diversity Notes series, where 131 taxa accommodated in 28 families are mainly described from Rosa (Rosaceae) and a few other hosts. Novel fungal taxa are described in the present study, including 17 new genera, 93 new species, four combinations, a sexual record for a species and new host records for 16 specie...

The lichen species of the genus Thamnolia , with their striking wormlike thalli and frequent occurrence in arctic and tundra environments, have often been debated with regard to the use of chemistry in lichen taxonomy. Phylogenetic studies have arrived at different conclusions as to the recognition of species in the genus, but in a recent study bas...

Aspicilia goettweigensis is a poorly known species from xerothermic siliceous rocks in Europe. It is considered to be common in the Czech Republic and it is new to Hungary and Russia. The main diagnostic character is formation of cracked popcorn-like areoles in central parts of thalli. Analysis of nrITS sequences revealed its close relationship to...

Thamnolia is a lichenized fungus with an extremely wide distribution, being encountered in arctic and alpine environments in most continents. In this study, we used molecular markers to investigate the population structure of the fungal symbiont and the associated photosynthetic partner of Thamnolia. By analyzing molecular, morphological , and chem...

The sixth volume, dedicated to some important genera of the family Verrucariaceae, includes treatments of 64 species representing the genera Atla, Catapyrenium, Clavascidium, Dermatocarpon, Henrica, Heteroplacidium, Involucropyrenium, Placidiopsis, Placidium, Polyblastia and Sporodictyon. The study is based on material in the major Nordic herbaria...

Two new species in the lichen genus Atla, A. alaskana and A. recondita, are described. The ITS rDNA region is used for their molecular characterization. Morphologically, Atla alaskana is characterized by its rather thick and well-developed whitish grey thallus, and the rather large perithecia having a thalline excipulum. The presence of a thalline...

Although many important habitats are missing on the Baltic island of Gotska Sandön, the island's lichen flora is quite remarkable. Here we list 397 species, many of them rare and red-listed. The most interesting species and the highest diversity occur in the small deciduous woodlands, whereas the diversity in the dominating pine forests is rather l...

Two new species of calicioid fungi are described, Phaeocalicium triseptatum Tibell and Sphinctrina intermedia Tibell. While P. triseptatum is only known from Hokkaido, Japan, S. intermedia is known from Hokkaido and Korea. Sphinctrina leucopoda as reported from Korea in the literature is misidentified S. intermedia. The genus Microcalicium is repor...

A tribute to Rolf Santesson (1916–2013) - Volume 46 Issue 2 - Leif TIBELL, Roland MOBERG

A new genus in the Cantharellaceae, Afrocantharellus, is recognized based on results from phylogenetic analyses of rDNA LSU and concatenated LSU/5.8-ITS2/ATP6 data. It was previously recognized as a subgenus, but comprehensive fieldwork and the acquisition of numerous sequences for previously neglected African Cantharellus species formed the basis...

Polyblastia s.str. (Verrucariaceae, Chaetothyriomycetidae) of Northern Europe and the adjacent Arctic is revised. The morphology and the history of the exploration of Polyblastia s.str. is described. Twenty-five species are recognized, twelve of them being new. A molecular phylogeny of the genus based on the internal transcribed spacers (ITS) of nu...

Based on morphological, anatomical, chemical, ecological and molecular evidence, Blarneya is synonymized here with Tylophoron. The molecular phylogeny derived from sequences obtained from sporodochia of Blarneya places this genus, described to accommodate an anamorphic lichen with white cushion-shaped sporodochia, within Tylophoron. This conclusion...

The new species Megaspora rimisorediata Valadbeigi & A. Nordin is described from Iran, where it mainly grows on tree bark but also on calciferous rocks and mosses. It is characterized by a pale ochraceous to bluish grey, cracked and sorediate thallus, very rarely producing ascomata. It appears to be rather commonly distributed in Iran. Its close af...

Racoleus trichophorus gen. sp. nov. is described for a tropical sterile filamentous lichenized fungus which overgrows various crustose lichens on bark. It shares some features with Cystocoleus and Racodium, but is unique in having non-lichenized long lateral spines. The genus, which is known from China, the Ivory Coast, and Peru, is of uncertain sy...

A phylogenetic analysis based on small subunit (SSU) rDNA sequences shows the lecanoralean lichen families Caliciaceae and Physciaceae form a well-supported monophyletic group within the order Lecanorales (Ascomycotina). Support for this relationship is present from anatomical data, in particular data from spore ontogeny, where close similarities b...

A coelomycetous anamorph was obtained in axenic spore cultures of Chaenothecopsis savonica (Mycocaliciaceae, Cali-ciales). This anamorph is described. The anamorph has also been found on specimens collected in the field. A coelomycetous anamorph has not earlier been reported from Chaenothecopsis. The similarity between the anamorph of C. savonica a...

Small subunit ribosomal DNA has been sequenced from seven members of the ascomycete order Caliciales s.l. (Calicium adspersum, Cyphelium inquinans, Texosporium sancti-jacobi, and Thelomma mammosum (Caliciaceae), Chaenothecopsis savonica and Stenocybe pullatula (Mycocaliciaceae), and Sphinctrina turbinata (Sphinctrinaceae)), included in a matrix of...

Aspicilia fluviatilis and A. granulosa, two arctic and/or (sub)alpine species with elongate ± diverging and ± branching marginal areoles, are described as new and compared with similar species occurring in Fennoscandia. A parsimony analysis based on ITS indicates a close relationship with the mainly coastal A. epiglypta. Aspicilia epiglypta, A. dis...

Circinaria arida sp. nova is described from the Sonoran area. In the Sonoran Desert Lichen Flora 3 it was tentatively treated as Aspicilia desertorum. This name, however, is based on Lecanora desertorum, an illegitimate name introduced by Krempelhuber for both vagrant and saxicolous taxa, but usually only applied to non-vagrant, saxicolous specimen...

156 species of macrolichens and calicioid lichens are reported from Tanzania and Kenya. 28 species are new for Tanzania and 2 for Kenya. New for Africa are Hypotrachyna novella, H. physcioides, Melanelia panniformis, Physcidia squamulosa, and Xanthoparmelia microspora.

Phylogenetic analyses based on nuLSU and mtSSU indicate that Megasporaceae is monophyletic. Aspicilia species were distributed among three main well supported groups and one group with low support that included the type species; a division of the family into five genera is proposed. The old names Circinaria and Sagedia are reintroduced for groups n...