An annotated list of macrofungi and myxomycetes described from northern Belgium
Walleyn R., Declercq B., de Haan A., de Haan M., Van de Put K. & Van Ryckegem G.
A list is given of macrofungi and myxomycetes described from northern Belgium (Flanders and Brussels), including species described from greenhouses, with information on type material, type locality (and IFBL grid, used for Belgian botanical mapping programs) and actual taxonomic status. Type material is designated for following taxa: Agaricus muscarius var. sanguineus J. Kickx f., Cantharellus coemansii Rabenh., Cortinarius alborufescens Imler, Cyathus vernicosus var. desmazieri J. Kickx f., Diaporthe coemansii Nitschke, and Lenzites betulina var. zonata J. Kickx f. Coprinus rugosobisporus J. Geesink & Imler, described from both Flanders and the Netherlands, is validated.
Zeldzame en miskende russula's in Vlaanderen (2)
Walleyn R. & Le Jeune G.
Some interesting Russula species are described from collections from Flanders, northern Belgium, and their ecology and distribution is discussed.
Russula insignis Quél. is a widespread but uncommon species growing with Quercus on disturbed soil along roadsides and in parks. R. melliolens Quél. is a widespread but actually rather rare species growing with Quercus or Fagus. Russula melzeri Zvára is a rare species only known from the region around Brussels, growing with old Fagus or Castanea on loam in forests and parks. Russula odorata Romagn. seems not uncommon and grows with Quercus in more or less sunny grassy roadsides or parks. The microscopical features of this species are variable; one collection with broader pileipellis hyphae might belong to R. odorata var. lilacinicolor (Blum) Romagn. but this could not be confirmed by macroscopical observations. Russula melliolens is a declining species in the area. The three other species seemed completely overlooked in the past, even by mycologists experienced with the genus, and were only ‘discovered’ in the area for the last 20 years.
Zygogloea gemellipara en Spiculogloea minuta: twee interessante, parasiterende heterobasidiomyceten
Van de Put K.
Two interesting parasitic heterobasidiomycetes, collected during the autumn of 2004 in Belgium, are presented. Zygogloea gemellipara P. Roberts was found in an old carpophore of Myxarium nucleatum, Spiculogloea minuta P. Roberts was growing profusely in the rarely found Tulasnella cystidiophora.
Korte nota – Nieuwe combinaties
Two combinations, unintentionally published in AMK Mededelingen 2001(4): 111 are commented again.
Een sleutel tot de Xerocomus chrysenteron-groep in Vlaanderen
Van de Kerckhove O.
Identification tools are provided for keying out species of the Xerocomus chrysenteron-group in northern Belgium, viz Xerocomus chrysenteron, X. cisalpinus, X. communis, X. porosporus, X. pruinatus, X. ripariellus en X. rubellus, based on personal observations, paintings and microscopical studies. Blueing of the context of fresh fruitbodies and sections of the whole pileipellis are considered very valuable characters.
Bijdrage tot de kennis van het subgenus Telamonia (Cortinarius) in België (11)
de Haan A., Volders J., Gelderblom J. & Walleyn R.
In this report by the Cortinarius study-group of the “Koninklijke Antwerpse Mycologische Kring” some identifications of previous reports are corrected, and new full descriptions, illustrations and discussions are given of Cortinarius brunneus f. mesosporus ad int., C. decipiens var. atrocoeruleus (Moser) Lindstr., C. parvannulatus f. rigidiannulatus (de Haan et al.) de Haan & Volders comb. nov., C.malachius (Fr.: Fr.) Fr., C. fulvescens Fr. and C. tortipes Moënne-Loccoz. An index is added to all taxa described in our reports.
Monoicomyces (Ascomycetes, Laboulbeniales) in Belgium
De Kesel A.
The Belgian collections of Monoicomyces have been supplemented with new material and re-examined. Seven species are recognised, occurring on 13 host taxa, all belonging to the rove beetles (Coleoptera, Staphylinidae). Thallus descriptions, distributions, ecological and taxonomical notes, keys and illustrations are given. Monoicomyces bolitocharae, M. homalotae and M. nigrescens are reported new for Belgium.