Maart 2002
3-28
Het genus Tubaria in Vlaanderen
Jos Volders
A study of the genus Tubaria in northern Belgium (Flanders & Brussels) is given, based on fresh collections and the extant herbarium material. Illustrated descriptions, ecology and distribution maps are given of Tubaria confragosa, T. dispersa, T. hololeuca, T. pallidispora, T. minutalis, T. conspera and T. furfuracea. Tubaria hiemalis and T. romagnesiana are reduced to a variety, resp. a form of T. furfuracea. A key to all taxa is given, including also Tubaria albostipitata and T. praestans which are not reliably recorded yet from Belgium.
29-33
Licea floriformis var. aureospora en Licea biforis, twee nieuwe Myxomycota voor België
Myriam de Haan
For the second time a field trip in the domain Palingbeek (28/10/2000, Zillebeke, Province of West-Flanders) produced a few interesting corticolous Myxomycetes on the staked logs of broad-leaved trees (de Haan 2001). Like the previous year we found Licea scyphoides T.E. Brooks & H.W. Keller, Licea parasitica (Zukal) G.W. Martin and L. floriformis var. aureospora Willemse & Nann.-Brem. in large numbers. The latter is a rare species which is recognised by the combination of a slender stalk, golden yellow spores in mass and a peridium with small platelets. These are surrounded by small ridges, which give the whole a Cribraria-like appearance. But it is a solid, membranous peridium, dehiscing along the ridges into triangular lobes, like the petals of a flower. Licea floriformis var. floriformis Lakh. & Chopra has a short, thick stipe and the spores are black in mass. Licea floriformis var. aureospora is very close to L. erectoides Nann.-Brem. & Y. Yamam. The only real difference seems to be that this species is described as having smooth spores while those of var. aureospora appear smooth under the light microscope but very minutely and densely warted observed under SEM. As the authors do not mention observations with SEM of L. erectoides we cannot be sure of the real ornamentation of the spores.
Licea biforis Morgan was collected on the same substrate. This cosmopolitan species is recorded here for the first time from Belgium. It is recognised by its light yellow to dark brown, mostly fusiform sporocarps or vermiculate plasmodiocarps (up to 1,5 mm long, 0,07- 0,20 mm diam.), which sometimes branch. The peridium is almost always partly to completely covered with a gelatinous layer full of dirt particles, when it dries up it becomes a tough dark outer wall. The peridium is much thinner on top of the fructification and dehisces there by a longitudinal, yellow line. The spores are mostly subglobose to ellipsoid, 7-10 x 9,5-11,0 µm. The ornamentation consists of minute spinules.
Both species are described in detail and color drawings of macro- and microscopy are included.
34-63
Bijdrage tot de kennis van het subgenus Telamonia (Cortinarius) in België (8)
André de Haan, Jos Volders & Ruben Walleyn
In this eighth report by the Cortinarius study-group of the “Koninklijke Antwerpse Mycologische Kring” 11 collections found in 2000 are fully described, illustrated and discussed: Cortinarius cortinatus Hry., C. diasemospermus Lamoure, C. leucopus (Bull.: Fr.) Fr., C. miraculosus var. laccarioides var. nov., C. rigidus (Scop.) Fr. ss. Kühner & Romagn., C. alboviolaceus (Pers.: Fr.) Fr., C. sertipes Kühner, C. anomalus var. lepidopus (Cooke) J.E. Lange, C. romagnesii Hry., C. vernus var. rubescens var. nov. and C. diasemospermus var. leptospermus Lindstr.
64-66
A new Entoloma species with tibiiform cheilocystidia, Entoloma moliniophilum sp. nov.
Machiel Noordeloos, Ruben Walleyn & Annemieke Verbeken
A new Entoloma species is described from a wet heathland in Wingene (Flanders, Belgium), where it grows isolated or in small groups, apparently under Molinia. This small greyish brown, hygrophanous species has a striate pileus, a pale stipe and morre or less decurrent lamellae. Microscopically it is characterised by a well developed cutis with intracellular pigmentation, conspicous broadly clavate but capitate cheilo- and caulocystidia and the absence of clamps.
66
Short note: typification of Octaviania mutabilis
Ruben Walleyn
A lectotype is proposed for Octaviania mutabilis E. Bommer & Rousseau.
67-73
Studies omtrent het genus Pyrenopeziza Fuckel - I.
Bernard Declercq
Pyrenopeziza arctii (W. Phillips) Nannf., Pyrenopeziza polygoni (Lasch) Gremmen and Pyrenopeziza thalictri (Peck) Sacc. are recorded from Belgium for the first time. Mollisia polygoni (Lasch) Gillet var. rumicis (Sacc.) Sacc., another first record, is considered a synonym of Pyrenopeziza polygoni (Lasch) Gremmen. Pyrenopeziza inapiculata n.s., found on Iris pseudacorus, is described as a new species, characterised a.o. by the lack of marginal protudings on the excipulum. The new combination Spilopodia moutonii (Rehm) Declercq c.n. (based on Pyrenopeziza moutonii) is proposed.
74-84
Het genus Rhachomyces (Ascomycetes, Laboulbeniales) in België
André De Kesel
Seven representatives of the genus Rhachomyces (Laboulbeniales) were found in Belgium. All species are described, specific morphological features are discussed, host range and illustrations are given. An identification key, based on thallus morphology and host identity, is provided.
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