Articles by Taxonomic Group

Two novel species of the asexual ascomycete genus Neosporidesmium are described as N. garoense and N. khasianum from Garo and Khasi Hills of Meghalaya, India, respectively. Neosporidesmium garoense growing on bamboo litter is distinguished from closely related species by the larger size of synnema and smaller conidia. Neosporidesmium khasianum growing on litter of the tree Wightia speciosissima is distinguished by the size of conidia, the presence of multiple proliferations and the size of synnema.

The new species Kiliophora novozhilovii (Ascomycota, Incertae sedis), found in Vietnam on a dead leaf of an unidentified tree, is described, illustrated, compared with other species assigned to Kiliophora, and keyed out. The asexual, hyphomycetous ascomycete Zanclospora cf. novae-zelandiae has been found in Vietnam for the first time. This hitherto rarely encountered species is described and illustrated based on the Vietnamese collection, and its taxonomy is briefly discussed.

Nine new species of cercosporoid fungi were found on leaves of plants in family Fabaceae from the Brazilian Cerrado: Asperisporium galactiae on Galactia peduncularis, Sirosporium sclerolobii and Zasmidium sclerolobii on Sclerolobium paniculatum, Pseudocercospora acosmii-subelegantis on Acosmium subelegans, and Pseudocercospora stryphnodendri on Stryphnodendron adstringens. In addition, four other Pseudocercospora species were found on Cassia s. lat., including Chamaecrista and Senna: Pseudocercospora aquae-emendadasensis on Chamaecrista orbiculata; Pseudocercospora sennae, Pseudocercospora sennae-rugosae, and Pseudocercospora subcuticularis on Senna rugosa. Descriptions, illustrations, and discussions of the new taxa are supplemented by keys to Pseudocercospora species on hosts belonging to Cassia s. lat., and to Zasmidium species on Fabaceae.

The new lichenicolous hyphomycete species Gonatophragmium lichenophilum, found on Xanthoria parietina in Austria, is described, illustrated, discussed and compared with other species of Gonatophragmium. A key is given to all recognised species of this genus.

The new species Atractilina alinae and Neosporidesmium vietnamense, collected in Vietnam on fallen leaves of an unidentified tree and on bark of a twig of an unknown tree, respectively, are described, illustrated and discussed. A. alinae resembles the hyperparasitic A. parasitica, but differs in having quite distinct conidia. Neosporidesmium vietnamense is morphologically unique by its synnematous, indeterminate conidiomata, integrated, terminal, monoblastic, non-proliferating conidiogenous cells and obclavate, rostrate, euseptate conidia, but taxonomically rather complex with regard to its generic affinity.

The sporodochial hyphomycete genus Cheiromycella is briefly discussed, including nomenclature and taxonomy of its type species, C. microscopica. C. foliicola, a new species of this genus on leaves of Alnus fruticosa from Russia, is described, illustrated and compared with other species of Cheiromycella. Coniothecium chomatosporum var. variegatum is reassessed after examination of type material and reduced to a synonym of Coniosporium spadiceum, a new combination proposed for the anamorph of Hysterium insidens. A key to the species of Cheiromycella is provided.

Seventeen species of non-lichenized ascomycetes, anamorphic fungi, and rust fungi are reported for the first time from Mt. Strandzha in Bulgaria. Eight species among them are new records for the fungi in Bulgaria.

Straminipilous organisms and fungus species on dead fragments of 25 taxa of wetland plants from three water bodies were investigated. A total of 219 fungal taxa, including 85 straminipilous organisms and 134 fungus species were recorded. The largest number of straminipilous organisms and fungus species occurred on fragments of Lathyrus palustre and Rorippa amphibia (45 and 44 species respectively), the fewest on Calla palustris (20). The most common species were Chytridium xylophilum (on 23 plants), Pythium rostratum (on 15), Pithomyces obscuriseptatus (on all plants), Trinacrium subtile (on 17) and Titaea (Tetracladium) maxilliformis (on 16). The larger numbers of species were recorded in running water (Jaroszówka Spring, Supraśl River, 124 and 122 respectively), with fewest (106) in stagnant water at Dojlidy Pond. Thirty-one taxa were recorded for the first time from Poland.

The authors investigated aquatic fungi and chromistan organisms growing on the dead specimens of 11 species of free-floating plants in the water from three limnological and trophical different water bodies (spring, river and pond). On the specimens investigated plants in the water of water bodies of north-eastern Poland they identified 129 species including 57 chromistan organisms and 72 fungus species. The most common taxa were Aphanomyces laevis, Thraustotheca clavata, Pythium inflatum, P. rostratum, Anguillospora filiformis, A. pseudolongissima, Angulospora aquatica, Heliscus submersus, Lemonniera aquatica, Pithomyces obscuriseptatus, Tetracladium marchalianum, Tricellula aquatica. Most fungus species were observed on the specimens of Utricularia minor, U. vulgaris (each 36) and Hydrocharis morsus-ranae (34), fewest on Lemna gibba (22), Aldrowanda vesiculosa and Lemna minor (each 23). The most taxa were growing in the water from River Supraśl (64), the fewest in the water from Spring Jaroszówka (55). A number of chromistan organisms and fungus species (2 and 11 respectively) appeared new to Polish waters.

Aquatic fungi and fungus-like organisms, growing on nuts of seven birch species (Betula gracilis, B. humilis, B. lutea, B. nana, B. papyrifera, B. pubescens and B. verrucosa) found in the water of three limnologically and trophically different water bodies (spring, river and pond), were investigated. The total of 63 species, including 23 fungus-like organisms and 40 fungal species were found on the nuts of the investigated birches. The most common species were Karlingia rosea, Nowakowskiella macrospora, Achlya americana, Aphanomyces laevis, Saprolegnia ferax, Acrodictys bambusicola, Angulospora aquatica, Arbusculina fragmentans, Canalisporium caribense, Heliscus lugdunensis, Pithomyces obscuriseptatus, Tetracladium marchalianum and Tripospermum camelopardus ). Most of the species were observed on the nuts of Betula verrucosa (49 species) and the fewest on the nuts of Betula nana (42). In Cypisek spring, the number of fungal species and fungus-like organisms on the nuts was closely associated with the concentration of chlorides.However, in Supraśl River and Dojlidy pond it was associated with the sulphates concentration (in both cases negative correlation).

The authors investigated aquatic fungi and chromistan organisms (fungus-like organisms) growing on dead fragments of 7 species of floating-leaved plants (Limnanthemum nymphoides, Nuphar luteum, Nuphar pumilum, Nymphaea alba, Nymphaea candida, Polygonum amphibium f. natans and Potamogeton natans) in the water from three limnological and trophical different water bodies (spring, river and pond). They identified 106 species including 42 chromistan organisms and 64 fungus species, found on the fragments. A number of chromistan organisms and fungus species (Catenomyces persicinus, Nowakowskiella profusa, Polyphagus parasiticus, Rhipidium americanum, Rhipidium interrupta, Rhipidium partenosporum, Sporodina grandis, Endophragmiella latifusiformia, Pseudocercospora manuensis and Saprochaete ramosissima) are recorded as new to Polish waters.

The genus Stenella (S. lythri), Cercospora plumbaginea, and Ramularia geranii var. erodii are reported as new to Bulgaria. Also presented are two new records of fungus/host combinations and seven new localities for Ramularia spp.

Three species of the Gnomoniaceae, Gnomonia betulina, Hypospilina pustula, and Plagiostoma arnstadtiense, are reported as new to Romania. Gnomonia setacea is found on a new substratum.