Persoonia

As a prelude to a monograph of the genus Coprinus, types were studied of a number of species said to belong to Coprinus subsection Lanatuli (Coprinus alnivorus, C. alutaceivelatus, C. ammophilae, C. arachnoideus, C. asterophoroides, C. brunneistragulatus, C. bubalinus, C. citrinovelatus, C. colosseus, C. jonesii, C. lagopides, C. marcidus, C. pachydermus, C. palmeranus, C. roseistipitatus, C. scobicola, C. spadiceisporus, C. sylvicola, C. tectisporus, C. undulatus and C. xerophilus). As a result Coprinus alnivorus and C. lagopides are transferred to subsection Alachuani.

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A. Verbeken

Studies in tropical African Lactarius species. 8. A synopsis of the subgenus Plinthogali

A review is given of the tropical African representatives of the genus Lactarius subgenus Plinthogali (Burl.) Hesler & Smith. In this subgenus the new section Nigrescentes Ver beken (incl. L. orientalis stat. nov.) is defined for species with a blackening context. For the species with a rather smooth, sometimes shiny cap and latex changing to greyish-brownish when drying, the section Pseudofuliginosi Verbeken sect. nov. is proposed (incl. Lactarius atroolivinus Verbeken & Walleyn spec. nov.). All other representatives are provisionally classified in the section Plinthogali (incl. Lactarius sulcatus Verbeken & Walleyn spec. nov., L. tenellus Verbeken & Walleyn nom. nov.) before a more world-wide revision permits a further split of this diverse group. A checklist of the species is given, supplemented with illustrated descriptions of some species.

The taxonomic position of Arcangeliella dolichocaulis Pegl., showing af?nities with Lactarius subgenus Plinthogali, is discussed.

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H. Clémençon

Mycelial morphology, mitospores and primordium formation of Simocybe sumptuosa in laboratory cultures

In laboratory cultures Simocybe sumptuosa produces tiny slime drops with curved, binucleate conidia and ellipsoid, terminal or fusiform intercalary, binucleate chlamydospores. Chlamydospores occur also within the agar medium, but conidia do not. Noduli also form, and in one culture a few basidiomes developed. The mycelium is significantly denser beneath the noduli than between the noduli. Carpogenesis has been studied using stained microtome sections. Simocybe sumptuosa is exocarpic amphicleistoblemate.

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H.A. van der Aa, G.H. Boerema & J. de Gruyter

Contributions towards a monograph of Phoma (Coelomycetes) VI – 1. Section Phyllostictoides: Characteristics and nomenclature of its type species Phoma exigua

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.

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M.M. Nauta

Notulae ad floram agaricinam neerlandicam – XXXVII. Notes on Agaricus section Arvenses

Nomenclatural and taxonomical notes are given on species of Agaricus section Arvenses, together with a key to the accepted species occurring in the Netherlands and adjacent regions. Two new combinations, Agaricus osecanus var. squarrosipes (Bon & Collin) Nauta and Agaricus urinascens var. excellens (F. Møller) Nauta are made. A new variety of Agaricus sylvicola, var. squarrosus Nauta, is described.

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C.B. Uljé, F. Doveri & M.E. Noordeloos

Additions to Coprinus subsection Lanatuli

Two new Coprinus taxa in subsection Lanatuli, C. candidolanatus and C. lagopus var. vacillans, are described with an updated key to the subsection.

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E.C. Vellinga

Notulae ad floram agaricinam neerlandicam – XXXVIII. Leucoagaricus subgenus Sericeomyces

Leucoagaricus crystallifer spec. nov. is described; this species was formerly known as L. serenus in the interpretation of Bon and other authors. Leucoagaricus serenus sensu Kühner is neotypified, and the following new combinations are made: Leucoagaricus sericifer, and L. sericifer f. sericatellus.

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A.P. van den Berg, A.E. van den Berg-Blok, M.E. Noordeloos & C.B. Uljé

A new species and a new section of the genus Mycena from the Netherlands

Mycena cecidiophila is newly described and illustrated. It grows on knopper galls on the cups of Quercus robur, and was collected from a single site in the Netherlands, Huys ten Donck estate. Although the new species resembles a species of sect. Sacchariferae, it differs in the negative Melzer-reaction on the lamella trama. The new section Cecidiophilae is therefore proposed here to accommodate the new species, characterized by warty elements of the pileipellis, amyloid spores, and absence of pleuro- and cheilocystidia.

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J. van Brummelen & M.J. Richardson

Ascozonus monascus, a new species of Ascomycetes from Great Britain

Ascozonus monascus Brumm. & M.J. Richardson, a new coprophilous ascomycete from Scotland, is described and illustrated. It is characterized by ascomata developing only a single multispored ascus, with a subapical ring and a small operculum at the apex, and a few excipular cells near the base.

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P. Roberts

Aphelariopsis kupemontis. A new auricularioid species from Cameroon

A new clavarioid fungus with auricularioid basidia is described from Cameroon in West Equatorial Africa.

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K.B. Vrinda, C.K. Pradeep, S. Mathew & T.K. Abraham

Catatrama (Tricholomataceae), a genus new to India

Catatrama costaricensis, previously known only from the type specimen, is described and illustrated based on collections from Kerala state, India.

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