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	Provedor de dados Naturalis (33) Autor Arx, J.A. von (33) Aa, H.A. van der (3) Guarro, J. (3) Mukerji, K.G. (2) Samson, R.A. (2) Singh, N. (2) Constantinescu, O. (1) Douwes, G.A.C. (1) Dreyfuss, M. (1) Gams, W. (1) Martínez, A.T. (1) Müller, E. (1) Storm, P.K. (1) Walt, J.P. van der (1) Mais... Tipo do documento Article / Letter to the editor (33) Ano 1988 (1) 1987 (3) 1986 (4) 1984 (3) 1983 (1) 1982 (1) 1981 (3) 1980 (1) 1978 (3) 1977 (1) 1976 (1) 1975 (1) 1973 (3) 1971 (3) 1967 (1) 1965 (1) 1963 (1) 1959 (1) Mais... País Netherlands (33)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 33 Primeira ... 1 2 ... Última Notes on Microascaceae with the description of two new species Naturalis Arx, J.A. von. The Microascaceae are briefly discussed and a key to the accepted genera is given. The new species described are Pithoascus langeronii with an arthric anamorph Arthrographis langeronii) and Petriellidium fimeti with a Graphium-like anamorph. Pure culture descriptions are given of the psychrophilic Leuconeurospora pulcherrima and also of Faurelina elongata which has an arthric anamorph with 2-celled conidia. Tipo: Article / Letter to the editor Ano: 1978 URL: http://www.repository.naturalis.nl/record/532163 A re-evaluation of the Eurotiales Naturalis Arx, J.A. von. The Ascomycota classified in the Eurotiales, Gymnoascales, and Onygenales are considered to belong to a single order Eurotiales, which includes 4 families, based on the shape, size, and symmetry of the ascospores. The Eurotiaceae and Gymnoascaceae have dorsiventrally flattened ascospores, the Onygenaceae have elongated ascospores, and those of the Amauroascaceae are spherical or nearly so. Spherical or obovate-saccate, thin-walled, unitunicate asci, aseptate, hyaline, or pale ascospores without germ pores, and the absence of ostiolate or discoid ascomata are characteristic of all Eurotiales (and the Erysiphales and Dipodascaceae). Anamorphs are often predominant; the conidia develop from meristematic hyphae, are often catenate and separate from each other... Tipo: Article / Letter to the editor Ano: 1987 URL: http://www.repository.naturalis.nl/record/532076 Die Gattungen der Myriangiales Naturalis Arx, J.A. von. Die Myriangiales sind ascoloculäre Ascomyceten mit bitunicaten Asci und lassen sich durch Zwischenformen mit den Dothiorales verbinden. Bei ihnen entstehen die Asci im Innern von Fruchtkörpern einzeln zerstreut und sind kugelig oder breit keulig. Die 21 anerkannten Gattungen werden schlüsselförmig dargestellt und anschliessend einzeln besprochen. Die Vertreter der Gattungen Myriangium und Angatia wachsen auf Schildläusen oder sind Saprophyten. Parasiten auf höheren Pflanzen werden in die Gattungen Elsinoë, Bitancourtia, Anhellia, Diplotheca und Butleria gestellt. Bei den Vertretern der Gattungen Uleomyces, Cookella und Pycnoderma handelt es sich um Hyperparasiten auf blattbewohnenden Kleinpilzen. Die Arten der Gattungen Molleriella, Saccardinula,... Tipo: Article / Letter to the editor Ano: 1963 URL: http://www.repository.naturalis.nl/record/531713 Notes on Beauveria Naturalis Arx, J.A. von. Relationship between Beauveria and some other genera is discussed. SEM-micrographs of the conidiophores of B. nivea are given. Synonymy of Tolypocladium with Beauveria is emphasized. The orthographic error B. arenarium (Petch) v. Arx (1986) is corrected and should be read B. aranearum. Tipo: Article / Letter to the editor Ano: 1988 URL: http://www.repository.naturalis.nl/record/532414 Canariomyces notabilis, a peculiar Ascomycete from the Canary Islands Naturalis Arx, J.A. von. The Canary Islands are famous not only for the climate, but also for the flora. Many endemic plants are found, mainly succulents or woody shrubs belonging to the Euphorbiaceae, Fabaceae, Crassulaceae, Boraginaceae and Asteraceae. Monocotyledons are inconspicuous, except for Phoenix canariensis and the famous Dracaena draco. Over the last few years I collected on Gran Canaria parasitic and saprophytic fungi on plants and plant debris. These included Ascomycetes belonging to genera such as Chaetomium, Chaetomidium, Achaetomium, Emericella, Ceratocystis and Thielavia. A peculiar ascomycete, found on litter of Phoenix canariensis could not be identified. It was isolated by using viable ascospores and the following description is based on agar cultures. Tipo: Article / Letter to the editor Ano: 1984 URL: http://www.repository.naturalis.nl/record/531795 Acrocladium, a synonym of Periconiella Naturalis Arx, J.A. von. Petrak (1949) described the genus Acrocladium (type species: A. andinum Petrak) from unidentified leaves of a liane, collected by H. Sydow in 1937 in Ecuador. He compared the genus with Stachybotrys Corda and Sterigmatobotrys Oudem. The type specimen (W) was available for study. The leaves bear several fungi with hemispherical-discoid fructifications, including Asterinella puiggarii (Speg.) Theiss., Chaetothyrina musarum (Speg.) Theiss., and Asterina cf. guaranitica Speg. The fungus described as Acrocladium andinum is hardly visible with the naked eye, but can easily be recognized under a stereo microscope. Petrak (1949) considered this fungus to be a leaf parasite, but it may be also a mycoparasite. Tipo: Article / Letter to the editor Ano: 1981 URL: http://www.repository.naturalis.nl/record/531629 The ascomycete genus Sordaria Naturalis Guarro, J.; Arx, J.A. von. Sordaria is restricted to coprophilous, soil-, or seed-borne Pyrenomycetes with aseptate, elongate ascospores with a gelatinous, amorphous sheath. The genus is redescribed and a key to fourteen accepted species is given. A checklist of all taxa described as Sordaria is added. Tipo: Article / Letter to the editor Ano: 1987 URL: http://www.repository.naturalis.nl/record/532003 The genera Petriellidium and Pithoascus (Microascaceae) Naturalis Arx, J.A. von. Keys are given to the genera of the Microascaceae and to the species of Petriellidium and Pithoascus. In Petriellidium six species are accepted, P. desertorum, P. ellipsoideum, P. fusoideum, and P. africanum are described as new. In Pithoascus also six species are enumerated, P. platysporus and P. stoveri are described as new, for Microascus exsertus Skou the combination Pithoascus exsertus is proposed. Tipo: Article / Letter to the editor Ano: 1973 URL: http://www.repository.naturalis.nl/record/532166 Are yeast cells of Endomycetales homologues of conidia of Eurotiales? Naturalis Arx, J.A. von; Walt, J.P. van der. Similarities in structure, symmetry, and size of asci and ascospores indicate a phylogenetic relationship between the Endomycetales (Endomycetes, Hemiascomycetes) and the Eurotiales and Erysiphales of the Ascomycetes. Their anamorphs which form catenate conidia from meristematic zones and which are released by disjunctive structures, are also similar. The structures in the septa of hyphal Endomycetales termed micropores or plasmodesmata, are considered to be disjunctive pegs. Tipo: Article / Letter to the editor Ano: 1986 URL: http://www.repository.naturalis.nl/record/532377 Xenostilbum, a synonym of Calostilbella Naturalis Arx, J.A. von. The generic name Xenostilbum was introduced by Petrak (1959) for a coremial fungus, collected by H. Sydow in 1937 in Ecuador on a branch of an unidentified tree. The type specimen of X. sydowii Petrak (in Herb. W) was studied. The voluminous description given by Petrak (1959) proved to be correct and complete. The bright synnemata develop in brushes on a basal stroma and are 5-10 mm long and 0.3-0.6 mm broad. The conidiogenous head is slightly darker and broader. The conidia develop singly and apically on filiform, 60-120 μm long and 2-3 μm broad, subapically swollen and attenuated hyphae. Mature conidia are ellipsoidal, 4-celled, composed of two large, golden-yellow central cells and two small, nearly hyaline apical cells, rather thickwalled and measure... Tipo: Article / Letter to the editor Ano: 1981 URL: http://www.repository.naturalis.nl/record/531884 A key to the species of Gelasinospora Naturalis Arx, J.A. von. The species described in Gelasinospora and in the synonymous genus Anixiella are keyed out and listed alphabetically. Three species described as Anixiella are transferred to Gelasinospora. Tipo: Article / Letter to the editor Ano: 1982 URL: http://www.repository.naturalis.nl/record/531751 Über die Ascomycetengattung Plochmopeltis Theiss Naturalis Arx, J.A. von. Plochmopeltis intricata (Ellis & Mart.) Theiss., the type species of the genus Plochmopeltis Theiss. occurs on the underside of leaves of Quercus virginiana var. virescens and Quercus laurifolia. The fungus grows superficially, with flattened ascomata which are not covered with a perithecial wall. The asci are surrounded by paraphysoids, which are brown and furcate into short branches at their apices. A new species, collected on leaves of Olea americana is described as Plochmopeltis ellisii v. Arx. The genus Plochmopeltis is related to Schizothyrium Desm. and Phillipsiella Cooke, and should be placed in the Dothiorales. Tipo: Article / Letter to the editor Ano: 1959 URL: http://www.repository.naturalis.nl/record/531697 Das hymenophorale Trama bei den Agaricales Naturalis Douwes, G.A.C.; Arx, J.A. von. Short descriptions and camera lucida drawings are given of cross-sections through the hymenophoral trama (lamellae or tubes) of 24 Basidiomycetes. These represent all the 16 Families of the Agaricales sensu Singer (1962). The typical members of the Agaricales in a limited definition have to be characterised by a more or less regular or bilateral trama with enlarged cells, or with swollen cellwalls in the Boletaceae, Strobilomycetaceae, Gomphidiaceae and Paxillaceae. In species of the genera Polyporus, Pleurotus (Polyporaceae), Lentinellus and Crepidotus such enlarged or swollen cells are lacking, the trama is irregular and is composed of a dense network of thickwalled hyphae. These genera and others like Schizophyllum better can be classified in the... Tipo: Article / Letter to the editor Ano: 1965 URL: http://www.repository.naturalis.nl/record/535129 A new coprophilous Ascomycete from India Naturalis Arx, J.A. von; Mukerji, K.G.; Singh, N.. In the course of a study of coprophilous fungi collected in the Zoological Garden in Delhi, an ascomycete belonging to the genus Achaetomium was isolated. It differs from previously described species by larger ascospores and almost colourless ascomata with a wide apical opening. Tipo: Article / Letter to the editor Ano: 1978 URL: http://www.repository.naturalis.nl/record/532299 Two new genera of the Eurotiales Naturalis Arx, J.A. von; Samson, R.A.. The ascomycete Anixiopsis peruviana Cain is transferred to a new genus Xanthothecium v. Arx & Samson. The name Leucothecium emdenii v. Arx & Samson, gen. nov., spec. nov. is proposed for a soil-borne fungus with light coloured, smooth cleistothecia, catenulate asci, lenticular ascospores and an arthroconidial state. The relationships of both genera are discussed. Tipo: Article / Letter to the editor Ano: 1973 URL: http://www.repository.naturalis.nl/record/532425 Callistospora and Creodiplodina, two Coelomycetous genera from Australia Naturalis Arx, J.A. von; Constantinescu, O.. The coelomycete genera Callistospora and Creodiplodina were described but not illustrated by Petrak (1955, 1957). Both genera have been omitted in recent publications on Coelomycetes. The following notes and figures are based on a study of the type specimens collected by E. Gauba in Australia and maintained in herb. W. Tipo: Article / Letter to the editor Ano: 1983 URL: http://www.repository.naturalis.nl/record/531738 Validation of Symbiotaphrina (Imperfetc yeasts) Naturalis Gams, W.; Arx, J.A. von. Symbiotaphrina Kühlwein & Jurzitza in Arch. Mikrobiol. 40: 258. 1961 (nom. inval.. Art. 36). Crescit in mycetomatibus intestinalibus coleopterorum Anobiidarum. Coloniae zymoideae, restrictae, cremeae vel luteae vel rubrae, mucidae; cellulae dacryoideae vel clavatae vel pyriformes, apicem attenuatum versus enteroblastice successione basipetali gemmantes. Tipo: Article / Letter to the editor Ano: 1980 URL: http://www.repository.naturalis.nl/record/532385 Leucosphaera, a new genus of the Pseudeurotiaceae Naturalis Arx, J.A. von; Mukerji, K.G.; Singh, N.. In the course of a study of herbivore dung collected in the Zoological Garden in Delhi, an ascomycete was observed and isolated which could not be accomodated in any known genus. It is therefore described below. Tipo: Article / Letter to the editor Ano: 1978 URL: http://www.repository.naturalis.nl/record/531721 Revision of Microascus with the description of a new species Naturalis Arx, J.A. von. The genus Microascus is redescribed. It now comprises species with ostiolate, dark ascomata and small, asymmetrical, one-celled, smooth, yellow ascospores with a single germ pore at the base. The conidial states fit Scopulariopsis or Wardomyces. A key is given to 11 accepted species and two similar species of Kemia and Chaetomium. A fungus isolated from soil in West Africa is described as Microascus senegalensis. A list of 7 excluded or doubtful species is added. Tipo: Article / Letter to the editor Ano: 1975 URL: http://www.repository.naturalis.nl/record/531678 A new Apiosordaria from soil Naturalis Guarro, J.; Martínez, A.T.; Arx, J.A. von. In the course of a study of fungi isolated from soil in Spain, an ascomycete belonging to the genus Apiosordaria was isolated. It differs from previously described species by much larger and pitted ascospores. Tipo: Article / Letter to the editor Ano: 1984 URL: http://www.repository.naturalis.nl/record/531779 Registros recuperados: 33 Primeira ... 1 2 ... Última

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