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| Registros recuperados: 15 | |
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| Gams, W.. |
| A key is provided covering only those species of Mortierella of which living cultures are available and which are recognized as specifically distinct. Two subgenera, Micromucor subgen. nov. and Mortierella, and nine sections in the latter are distinguished. The recognized species are listed with some new synonymies and bibliographic documentation. Three species which were invalidly published by Linnemann in 1936 are validated. |
| Tipo: Article / Letter to the editor |
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| Ano: 1977 |
URL: http://www.repository.naturalis.nl/record/531967 |
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| Gams, W.; Gerlagh, M.. |
| The ascigerous and conidial states of Plectosphaerella cucumeris Klebahn are redescribed. Perithecia were readily obtained only in four out of several thousand cultures. The species is homothallic. The correct name of the ascigerous state is considered to be Plectosphaerella cucumeris Klebahn; Nectria septomyxa Wollenweber is rejected, because it is based on a bitunicate ascomycete Sphaerella solani Ellis & Everh., for which the new combination Didymella solani (Ellis & Everh.) W. Gams & Gerlagh is proposed. For the identification of the conidial state the need for a ‘Hochkultur’ is emphasized. It is renamed Fusarium tabacinum (Beyma) W. Gams. A compilation of data has been made for the frequency of occurrence of the fungus in arable soils. The... |
| Tipo: Article / Letter to the editor |
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| Ano: 1968 |
URL: http://www.repository.naturalis.nl/record/532215 |
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| Gams, W.. |
| Cladobotryum penicillatum sp. nov. was isolated from Alnus twigs in New Forest, Hampshire, U. K., in 1971, and from Sebacina effusa in the Houtribbos Forest, O.- Flevoland Polder, Netherlands, in 1980. The species has conidia intermediate in dimension between C. varium and C. mycophilum, and it differs from both species by having rather slow-growing colonies and long conidiophores with apical penicillate branching. Conidiogenesis is basipetal and retrogressive. |
| Tipo: Article / Letter to the editor |
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| Ano: 1980 |
URL: http://www.repository.naturalis.nl/record/532452 |
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| Gams, W.; Hoozemans, A.C.M.. |
| The genus Cladobotryum Nees is characterized by mostly verticillately branched conidiophores with phialides, dry, one-celled or pluricellular conidia in heads or irregular chains, and pluricellular chlamydospores or sclerotia. Eight species are considered. In four of them the corresponding Hypomyces state is known, in one species it is conjectured. In cultures of Hypomyces rosellus and H. odoratus perithecia were obtained after mating of compatible strains. The conidium-forming cells are interpreted as phialides in all species, even if the meristematic zone extends beyond the apex and surrounds itself with a secondary wall. |
| Tipo: Article / Letter to the editor |
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| Ano: 1970 |
URL: http://www.repository.naturalis.nl/record/534938 |
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| Gams, W.; Hoozemans, A.C.M.. |
| The genus Cladobotryum Nees is characterized by mostly verticillately branched conidiophores with phialides, dry, one-celled or pluricellular conidia in heads or irregular chains, and pluricellular chlamydospores or sclerotia. Eight species are considered. In four of them the corresponding Hypomyces state is known, in one species it is conjectured. In cultures of Hypomyces rosellus and H. odoratus perithecia were obtained after mating of compatible strains. The conidium-forming cells are interpreted as phialides in all species, even if the meristematic zone extends beyond the apex and surrounds itself with a secondary wall. |
| Tipo: Article / Letter to the editor |
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| Ano: 1970 |
URL: http://www.repository.naturalis.nl/record/532115 |
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| Gams, W.. |
| Subramanian’s concept of true and false chains of phialoconidia is rejected and replaced by a distinction between connected and disconnected chains. In connected conidial chains the primary conidial wall is strongly thickened at both ends and a connective is formed. This criterion allows the distinction between trichocomaceous or eurotiaceous (connected) and sphaeriaceous (disconnected) catenulate phialoconidia. The ultrastructure of conidiogenesis is described. On the basis of this criterion, the species of the Acremonium diversisporum series as well as the anamorph of Sagenoma viride Stolk & Orr with connected chains are transferred from Acremonium to the new genus Sagenomella to which four new species are added. |
| Tipo: Article / Letter to the editor |
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| Ano: 1978 |
URL: http://www.repository.naturalis.nl/record/532421 |
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| Gams, W.; Hooghiemstra, H.. |
| Several species of Mortierella described until 1930 are today unknown since living cultures are unavailable. The diagnoses of most of these species have been reproduced by Linnemann (in Zycha & Siepmann, 1970). but it is difficult to assess the justification of their retention. Recently Kuhlman & Hodges (1972) rediscovered M. rostafinskii Bref. and M. strangulata Tiegh., two similar but distinct species. This contribution concerns the rediscovery of another so far problematic species. During the study of the fungal flora of the Heseper Moor near Meppen, Niedersachsen, F. R. G., Mortierella turficola Ling Yong (1930) was found to be the predominating Mortierella species. A stand of Sphagnum recurvum P. Beauv. with some Eriophorum vaginatum L. (pH c.... |
| Tipo: Article / Letter to the editor |
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| Ano: 1976 |
URL: http://www.repository.naturalis.nl/record/531773 |
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| Gams, W.. |
| Conidium formation in some species of Aphanocladium W. Gams, Verticimonosporium Matsushima, Sibirina Arnold, Pseudofusarium Matsushima and Craspedodidymum Hol.-Jech. is discussed and compared with other examples. Conidiogenous cells with solitary and with serial conidia may occur in apparently closely related species. It is questionable, whether the term phialides has to be restricted to the latter group. The new species Aphanocladium spectabile and Sibirina orthospora are described. |
| Tipo: Article / Letter to the editor |
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| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/531879 |
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| Gams, W.. |
| Twenty-two species of Mortierella are described and distributed over the sections defined by Gams (1970) which include the following new species: Section Pusilla: M. roseo-nana; Section Alpina: M. globalpina and M. polygonia Section Simplex: M. amoeboidea; Section Hygrophila : M. elongatula, M. kuhlmanii, M. parazychae, M. armillariicola, M. selenospora, M. basiparvispora, and M. clonocystis; Section Spinosa: M. epicladia, M. acrotona, M. cystojenkinii, and M. fimbricyslis. |
| Tipo: Article / Letter to the editor |
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| Ano: 1976 |
URL: http://www.repository.naturalis.nl/record/532062 |
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| Seifert, K.A.; Gams, W.. |
| This supplement to the taxonomic monograph The Genera of Hyphomycetes summarises information on 23 accepted new genera and c. 160 species described in 2011. These include three dematiaceous genera (Funbolia, Noosia, Pyrigemmula, all related to Dothideomycetes), a bulbil-producing genus, Spiroplana (Pleosporales), and two endophytic genera, the sterile Periglandula (Clavicipitaceae), and the hyaline, sympodial Micronematobotrys (Pyronemataceae). Slow-growing, morphologically-reduced, darkly pigmented fungi continue to be the source of new taxa, including the new genus Atramixtia (Dothioraceae). Eight new genera of darkly pigmented chlamydosporelike anamorphs were described from marine or subtidal environments (Glomerulispora, Halozoön, Hiogispora,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Anamorphic fungi; DNA barcoding; Moulds; New genera; New species. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/532291 |
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| Gams, W.; Hoog, G.S. de; Samson, R.A.; Evans, H.C.. |
| Sporotrichum aranearum Cavara is redescribed from living cultures and found to have two kinds of conidiogenesis: phialidic and polyblastic. The latter type which is most conspicuous in this fungus, fits the genus Engyodontium de Hoog. This genus is considered to be a link between Verticillium and Aphanocladium and its generic diagnosis is extended to include both progressive and retrogressive formation of new conidiiferous pegs. Sporothrix (Tritirachium) rectidentatum (Matsushima) de Hoog and Cephalosporium aranearum Petch, in which some polyblastic conidiogenous cells with narrow denticles were also found, are transferred to Engyodontium. For the latter species the new name E. arachnophilum is proposed. The genus now comprises six species, including E.... |
| Tipo: Article / Letter to the editor |
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| Ano: 1984 |
URL: http://www.repository.naturalis.nl/record/532307 |
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| Gams, W.. |
| The morphology and nomenclature of the characteristic, probably monotypic, stilbellaceous hyphomycete genus Tilachlidium Preuss has been dealt with by Petch (1937) and Gams (1971: 141). A perfect state was then unknown. Colonies of the fungus in vitro are rather similar to those of Nectria viridescens Booth. The conidial state has now been found in nature connected with a hypocreaceous (nectriaceous) perfect state. |
| Tipo: Article / Letter to the editor |
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| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/532046 |
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| Gams, W.. |
| A new genus of soil-borne Moniliales, Tolypocladium, is described with three new species. It is characterized by slow-growing raised floccose whitish colonies, conidiophores arising terminally and laterally from aerial hyphae, consisting of verticillate phialides, sometimes supported by short lateral cells; phialides consist of a swollen base and a narrowly tapering, frequently bent neck; conidia small, 1-celled, in slimy heads. In the discussion genera of Moniliales with swollen phialides and 1-celled conidia in slimy heads are reviewed and compared with Tolypocladium. |
| Tipo: Article / Letter to the editor |
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| Ano: 1971 |
URL: http://www.repository.naturalis.nl/record/531667 |
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| Registros recuperados: 15 | |
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