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| Registros recuperados: 27 | |
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| Boerema, G.H.; Kesteren, H.A. van. |
| This paper deals with the synonymy of five species of Phoma formerly referred to Plenodomus: Phoma astragalina (Gonz.-Frag.) comb. nov., Phoma petrakii nom. nov., Phoma pezizoides (Ell. & Ev.) comb. nov., Phoma ruttneri (Petr.) comb. nov. and Phoma sclerotioides (Preuss) ex Sacc. (in phytopath. literature well known as Plenodomus meliloti Dearness & Sanford). Further a review is given of the synonymy of previously treated species of Phoma sect. Plenodomus. |
| Tipo: Article / Letter to the editor |
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| Ano: 1981 |
URL: http://www.repository.naturalis.nl/record/532271 |
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| Boerema, G.H.. |
| The type of Phoma herbarum is selected and the characteristics of the species are redescribed from recently isolated material. Synonyms of this ubiquitous saprophytic fungus are inter alia: Phoma urticae S. Schulz. & Sacc., Phoma oleracea Sacc., Phoma violacea (Bertel) Eveleigh (described from paint), Phoma hibernica Grimes & al. (described from butter), and Phoma lignicola Rennerfelt (described from wood). |
| Tipo: Article / Letter to the editor |
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| Ano: 1964 |
URL: http://www.repository.naturalis.nl/record/531840 |
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| Boerema, G.H.. |
| The two anamorphs classified so far in Phoma sect. Pilosa (‘hairy’ pycnidia in vitro) are both metagenetically related to species of the ascomycetous genus Pleospora. In addition to their characteristics in vitro and in vivo short comments on the hosts, literature data, ecology and distribution are given. The notes include additional documentation of the type specimens (dried cultures) of the recently described Phoma schneiderae Boerema et al., Phoma pimpinellae Boerema et al. and Phoma leveillei var. microspora de Gruyter & Boerema. Some excluded species are discussed as new proposed taxa: Asteromella ulmi nom. nov. (teleom. Mycosphaerella ulmi Kleb.), Microsphaeropsis fuckelii (Sacc.) Boerema comb. nov. (teleom. Leptosphaeria coniothyrium (Fuckel)... |
| Tipo: Article / Letter to the editor |
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| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/531958 |
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| Gruyter, J. de; Boerema, G.H.. |
| In this paper eleven species of Phoma with obvious setose pycnidia, grouped in the section Paraphoma, are documented and described. Most of these species were formerly classified in Pyrenochaeta. The following new taxa have been proposed: Phoma briardii nom. nov., Phoma carteri nom. nov., Phoma glycinicola nom. nov., Phoma indica (T.S. Viswan.) comb, nov., Phoma setariae (H.C. Greene) comb. nov. and Phoma leveillei var. microspora var. nov. Indices on host/substratum-fungus and fungus-host relations are included and short comments on the ecology and distribution of the taxa are given. |
| Tipo: Article / Letter to the editor |
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| Ano: 2002 |
URL: http://www.repository.naturalis.nl/record/532239 |
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| Boerema, G.H.. |
| The sporogenesis of Phoma herbarum Westend., and Phoma species in general, is discussed. Additional data are given on the synonymy of P. herbarum and the status of its various infraspecific taxa is revised. Most of the ‘varieties’ and ‘forms’ appear to belong to the ubiquitous species Phoma exigua. Phoma macdonaldii is proposed as a new species and Stagonospora samarorum (Desm.) as a new combination. |
| Tipo: Article / Letter to the editor |
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| Ano: 1970 |
URL: http://www.repository.naturalis.nl/record/531750 |
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| Boerema, G.H.; Gruyter, J. de; Noordeloos, M.E.. |
| The new section Heterospora is proposed for Phoma species producing not only relatively small, mainly aseptate conidia, but also distinctly larger conidia, which may become 1- or more septate: ‘ascochytoid-stagonosporoid’. The majority of the conidia are always phomoid in vitro, but in vivo they may be predominantly large and septate, synanamorphs being therefore referred to Stagonosporopsis Died. The heterosporous species are described in vitro, with additional data on the conidial morphology in vivo. An addendum deals with eight species from other sections which display a similar conidial dimorphism. Five new species and four new combinations have been proposed: Phoma actaeae spec. nov., Phoma alectorolophi spec. nov., Phoma nigripycnidia spec. nov.,... |
| Tipo: Article / Letter to the editor |
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| Ano: 1997 |
URL: http://www.repository.naturalis.nl/record/532060 |
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| Boerema, G.H.; Gruyter, J. de. |
| This supplement deals with the diagnostic characteristics and literature data of three species of Phoma sect. Plenodomus: Phoma korfii spec. nov. (synanamorph Sclerotium orobanches Schwein.: Fr.), Phoma pimpinellae spec. nov. (teleomorph Leptosphaeria pimpinellae Lowen & Sivan.) and Phoma etheridgei L.J. Hutchison & Y. Hirats. (only known from isolates). They are filed into the key of section Plenodomus and the indices of the section are supplemented. |
| Tipo: Article / Letter to the editor |
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| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/532354 |
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| Gruyter, J. de; Boerema, G.H.; Aa, H.A. van der. |
| Thirty taxa in Phoma sect. Phyllostictoides, characterised by secondary septation of a variable number of conidia, are described in vitro. Two Phyllostictoides-like species are (re)classified in sect. Sclerophomella on account of certain pycnidial characteristics. Short notes on the ecology and distribution are added. Newly proposed taxa are: Phoma acetosellae (A. L. Sm. & Ramsb.) Aa & Boerema comb, nov., Phoma argillacea (Bres.) Aa & Boerema comb. nov. (teleomorph Didymella applanata (Niessl) Sacc.), Phoma nepeticola (Melnik) Dorenb. & de Gruyter comb, nov. (teleomorph Didymella catariae (Cooke & Ellis) Sacc.), Phoma destructiva var. diversispora de Gruyter & Boerema var. nov., Phoma heliopsidis (H.C. Greene) Aa & Boerema comb,... |
| Tipo: Article / Letter to the editor |
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| Ano: 2002 |
URL: http://www.repository.naturalis.nl/record/531856 |
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| Boerema, G.H.; Kesteren, H.A. van. |
| The nomenclature of the perfect and imperfect stages of Mycosphaerella brassicicola (Duby) Lind. and Leptosphaeria maculans (Desm.) Ces. & De Not. is discussed. The imperfect stages of these two parasites of Brassica spp. are often confused. Mycosphaerella brassicicola has a spermagonial stage with the characters of the form-genus Asteromella Pass. & Thüm. In phytopathological literature it is incorrectly known as a Phyllosticta species: P. brassicicola McAlp. A new combination for this stage is proposed: Asteromella brassicae (Chev.) Boerema & van Kesteren. The pycnidial stage of L. maculans is known in phytopathological literature as Phoma lingam (Tode ex Fr.) Desm. Its characters, however, are quite different from those of the type-species... |
| Tipo: Article / Letter to the editor |
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| Ano: 1964 |
URL: http://www.repository.naturalis.nl/record/532459 |
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| Aa, H.A. van der; Boerema, G.H.; Gruyter, J. de. |
| A description is given of the morphological characters of Phoma section Phyllostictoides and its taxonomical position is discussed. A key is provided for the varieties of the type species Phoma exigua Desm., followed by a host-fungus and a fungus-host index. Two new varieties are proposed: Phoma exigua var. forsythiae (Sacc.) comb. nov. and Phoma exigua var. noackiana (Allesch.) comb. nov. The synonymy, selected literature, a representative culture and data on ecology and distribution are given for all varieties. |
| Tipo: Article / Letter to the editor |
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| Ano: 2001 |
URL: http://www.repository.naturalis.nl/record/532006 |
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| Boerema, G.H.; Gruyter, J. de. |
| This paper deals with ten species of Phoma, characterized by thick-walled pseudoparenchymatous pycnidia. They superficially resemble the thick-walled pycnidial phenotype in species of Phoma sect. Plenodomus, but scleroplectenchyma is lacking and teleomorphs belong to Didymella, not Leptosphaeria. Keys and indices of host-fungus and fungus-host relations are provided and short comments on the ecology and distribution of the taxa are given. |
| Tipo: Article / Letter to the editor |
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| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/532036 |
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| Gruyter, J. de; Noordeloos, M.E.; Boerema, G.H.. |
| Twenty-seven taxa in section Phoma with conidia not exceeding 7 µm in length are keyed out and described on account of their characteristics in vitro. Four new species are introduced: Phoma aurea de Gruyter, Noordel. & Boerema, Phoma crystallifer de Gruyter, Noordel. & Boerema, Phoma flavescens de Gruyter, Noordel. & Boerema and Phoma subherbarum de Gruyter, Noordel. & Boerema. As new names are proposed Phoma chenopodiicola de Gruyter, Noordel. & Boerema, Phoma pereupyrena de Gruyter, Noordel. & Boerema and Phoma selaginellicola de Gruyter, Noordel. & Boerema. New combinations of species originally classified in Phyllosticta Auct. include: Phoma ajacis (Thümen) v.d. Aa & Boerema, Phoma arachidis-hypogaeae (Vasant Rao) v.d.... |
| Tipo: Article / Letter to the editor |
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| Ano: 1993 |
URL: http://www.repository.naturalis.nl/record/532254 |
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| Boerema, G.H.; Bollen, G.J.. |
| New definitions of the form-genera Phoma Sacc. and Ascochyta Lib., based on developmental criteria, are presented. Phoma species show phialidic ontogeny. The first conidium is produced within a papillate protrusion of the undifferentiated parent cell; after a conidium secedes the basal part of the papilla remains as a collarette on the conidiogenous cell which may show two or three layers corresponding with the layers of the original papilla. The conidia secede by a three-layered septum and are in principle one-celled, although secondary septation may occur, especially in vivo (0-95%). In vitro under normal laboratory conditions the majority of conidia however always remain one-celled. The pycnidia are usually glabrous but also may be hairy or setose.... |
| Tipo: Article / Letter to the editor |
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| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/531868 |
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| Registros recuperados: 27 | |
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