Sporobolomyces yuccicola,a new species of ballistosporous yeast equipped with ubiquinone-9

A hitherto undescribed ballistosporous yeast was isolated from a dead leaf of Yucca sp. in Canada. This yeast produces apiculate or short-ellipsoidal ballistospores, produces pale colored colonies, has Q-9 as the major ubiquinone, and does not contain xylose in the cells. This new yeast is described as Sporobolomyces yuccicola Nakase et Suzuki. Sporobolomyces yuccicola is the sixth species of the intermedius group, a group of atypical species of the genus Sporobolomyces equipped with Q-9.     

Sporobolomyces inositophilus,a new species of ballistosporous yeast isolated from a dead leaf of Sasa sp. in Japan

A new species of ballistosporous yeast, Sporobolomyces inositophilus was isolated from a dead leaf of Sasa sp. collected at a mountain in Japan. This yeast is assumed to have a close relationship to Sporobolomyces singularis since it produces bilaterally symmetrical ballistospores and pale-coloured colonies and resembles Sporobolomyces singularis in these respects. These two species differ from typical species of Sporobolomyces and seem to constitute a natural taxonomic group.     

The expanding realm of ballistosporous yeasts

The recent progress in the systematics of ballistosporous yeasts is discussed. The extensive isolation studies carried out in the last decade resulted in a marked increase in the number of ballistosporous yeast species which now number nearly fifty. The increased number of species has expanded the complexity of taxonomic properties in the following ways: expansion of the range of mol% G+C of nuclear DNA to 39–68.5, thus overlapping that of all basidiomycetous yeasts; increased complexity of conidiogenesis with the finding of the generaBallistosporomyces andKockovaella. Based on partial sequencing of 18S ribosomal RNA (positions 1451–1618 inSaccharomyces cerevisiae), it is suggested that mode of conidiogenesis has little value for defining genera. Consequently, ballistosporous yeasts merely represent the ballistosporous stage of various taxa which cover the whole evolutionary spectrum of basidiomycetous yeasts. The importance of continuing isolation of ballistosporous yeasts is stressed, which together with molecular studies, will aid further progress in the systematics of basidiomycetous yeasts.     

A new species ofRoumegueriella

A new species ofRoumegueriella (Ascomycetes; Hypocreales),R. pulchella, is described and illustrated. This fungus is characterized by its rapid growth on Czapek-yeast extract and YpSs agars at 37°C, bright yellow non-ostiolate ascomata, translucent membranaceous peridium, broadly clavate asci, and hyaline one-celled subglobose-ovoid ascospores ornamented with prominent spines. The holotype was isolated from soil in a sugarcane field in Okinawa, Japan.     

A new Cryptococcus species

Summary A newCryptococcus species,Cryptococcus gastricus, is described. Its relationship to the genusLipomyces is discussed.     

Revision of the Genus Protostelium (Eumycetozoa) I: The Protostelium mycophaga Group and the P. irregularis Group

ABSTRACT The most commonly encountered protostelids are nominal members of the genus Protostelium Olive & Stoianovitch. These are Protostelium mycophaga Olive & Stoianovitch and P. irregularis Olive & Stoianovitch. Both species share the common features of long-stalked fruiting bodies with single, uninucleate, deciduous spores and trophic states that consist solely of uninucleate amoebae, but they are quite different with respect to their detailed structure at both the light and electron microscopic levels. Based on this evidence, it seems unlikely that the species are congeneric, and it is proposed that P. irregularis be assigned to Soliformovum n. g. Examination of other species of Protostelium indicates that P. nocturnum Spiegel should be retained in the genus and that P. expulsum Olive & Stoianovitch should be reassigned to Soliformovum. The group most closely related to Protostelium, under this new concept, is the genus Planoprotostelium Olive & Stoianovitch, while Soliformovum is best treated as a genus of Eumycetozoa incertae sedis, though it does share some similarities with the group that includes the genera Ceratiomyxella Olive & Stoianovitch, Nematostelium Olive & Stoianovitch, and Schizoplasmodium Olive & Stoianovitch.     

假尾孢属一新种

报道寄生在山猪菜Merremia umbellata subsp. orientalis上假尾孢属Pseudocercospora的1个新种,鱼黄草假尾孢Pseudocercospora merremiae sp. nov.。文中提供了新种的拉丁文描述、形态描述、图及讨论。模式标本保存在中国科学院菌物标本馆（HMAS）。     

A new species of petalosporus

Summary A new species ofPetalosporus, P. anodosus, is described and illustrated. Two isolates representing this species were isolated from dung in California. The new species differs from the only other species of the genus,P. nodulosus, by the lack of thick-walled peridial hyphae with enlargements at the septa and by the absence of disarticulation of peridial elements. Peridial hyphae inP. anodosus have walls which are somewhat thickened and the cells are often variable in diameter. Conglomerate ascospores usually assume the petaloid arrangement characteristic of the genus.     

A new species of Anthopsis

Anthopsis catenata sp. nov., isolated from roots of Abies alba is described. The species is characterised by inverted phialides producing pale brown, ellipsoidal to subglobose conidia in chains.