|
|
Ger Harmsen (1922-2005) overleden
H.J. During
|
2-6
|
|
|
|
Herfsttijloos, "Les Confessions" van Ger Harmsen (1922-2005) en Jan Jacques Rousseau (1712-1778)
J.L. Spier
|
7-8
|
|
|
|
Inventarisatie van de mossen van het natuurreservaat "Het Hemrik", Harendermolen, gem. Haren, prov. Groningen
B.O. van Zanten
|
9-13
|
Survey of the bryophytes of the nature reserve “Het Hemrik”, Harendermolen, municipality of Haren, Prov. of Groningen. The bryophyte flora of nature reserve, “Het Hemrik”, which is situated ca. 10 km S of the city of Groningen in the north of The Netherlands has been surveyed. The reserve lays at the transition of diluvial sands towards the marshlands along the Drentsche Aa valley and consists mainly of wet patches of woods (mainly alder, birch and willow) and demineralized grasslands. 49 species were found of which the following are the most interesting: Calliergon cordifolium and Climacium dendroides in the grasslands, Dicranum fuscescens, D. montanum, Isothecium myosuroides and Thuidium tamariscinum in the birch-alder wood and Brachythecium salebrosum, B. velutinum, Orthotrichum pulchellum (very common), Ulota bruchii and Frullania dilatata in the wet willow wood. In 1952 Hamatocaulis vernicosus and Scorpidium revolvens were found in the reserve. During a survey in 1972 a number of interesting species of wetlands were found: Aulacomnium palustre, Calliergon stramineum, Fissidens adianthoides and Plagiomnium affine. None of these species were collected again. The disappearance is probably due to the lowering of the water level until 1976. From that year onwards the level has been raised and the grassland is mowed once a year and the plant material removed. This resulted in the appearance of Plagiomnium ellipticum and Rhizomnium punctatum in the reserve.
|
|
|
De mossen van het natuurreservaat de "Meneerskooi", een oude eendenkooi uit Uithuizermeeden (Noord-Groningen)
B.O. van Zanten
|
14-16
|
The bryophytes of the nature reserve “Meneerskooi”, an abandoned duck decoy near Uithuizermeeden (province of Groningen, The Netherlands). The nature reserve consists of a decoy with surrounding grassland and an artificial pond. The open water of the decoy is surrounded by a small border of wood with mainly old Sambucus nigra trees and some Acer pseudoplatanus, Fraxinus excelsior, Populus alba and Salix alba. The most interesting find in the border is the very abundant occurrence of Zygodon conoideus (with one capsule). Other noteworthy finds are further Brachythecium salebrosum, Orthotrichum tenellum, Syntrichia laevipila, S. papillosa, Ulota phyllantha, Zygodon viridissimus var. viridissimus and Metzgeria furcata. All these species were mainly growing on Sambucus. On the sandy clay of the surrounding grassland 11 species were found and 20 on the slanting taluds of the pond. The most interesting species of the last group are Amblystegium varium, Bryum intermedium, Cratoneuron filicinum, Dicranella schreberiana, Didymodon fallax, Pohlia melanodon and the liverworts Aneura pinguis and Pellia endiviifolia (with large, inflated involucra).
|
|
|
Zygodon dentatus (Limpr.) Kartt. (Getand iepenmos) nieuw voor Nederland
H.M.H. van Melick, A. van der Pluijm & J.A.M. Kersten
|
17-21
|
Zygodon dentatus (Limpr.) Kartt. new to the Netherlands. Zygodon dentatus is reported for the first time from the Netherlands. From 2001 onward it has been collected in three locations in the province of Noord-Brabant, in young oak plantations and in a willow forest. A new differential character for Z. dentatus is introduced: the cells of the brood bodies are often divided twice, which result in a conglomerate of three, mostly unequal subcells. As a result frequently oblique, curved or double longitudinal septae can be seen. In Z. viridissimus the cells of the brood bodies are divided only once into two equal subcells, and have one, mostly straight longitudinal septum.
|
|
|
Nieuwe vondsten van Bryum torquescens (Zonneknikmos) in Zuid-Limburg
R.J. Bijlsma & H.J. During
|
22-25
|
New records of Bryum torquescens in Zuid-Limburg (province Limburg, the Netherlands). In the Netherlands Bryum torquescens is known mainly from calcareous soils and limestone in the southernmost part of the country. Most records date from the 19th century. The species was rediscovered in chalk grasslands in this same area (1995 and 2002) and in adjacent Belgium (1987).
|
|
|
Lichenologisch verslag van het zomerkamp 2004 in Schotland
A. Aptroot, D.J. Dekker, L.B. Sparrius, J.L. Spier & M. Vervoort
|
26-38
|
Lichenological report of the field meeting 2004 in Scotland. In July 2004 a lichenological excursion was organized on Ardnamurchan peninsula in Argyll, Scotland. In total 575 taxa were seen in this rich and lichenologically well known region. Some of the most interesting records came from a small limestone outcrop, viz. Toninia subfuscae (parasitic on Lecanora campestris), which is new to the British Isles, and the rare and local Placynthium lismorense.
|
|
|
Zorgen om Gewoon roodlijstjesmos
E.J. Weeda
|
39-40
|
Misgivings about ‘Common Red List Moss’
The recent list of Dutch moss names published in Buxbaumiella 61 still contains several vernacular names with the adjective ‘Gewoon’ (= common) for mosses that are not at all of common occurrence. Because the main function of vernacular names is enabling communication between bryologists and non-bryologists, such names should not evoke misunderstandings. It’s hard to explain that a ‘common’ moss species holds a position on a Red List. Therefore the relevant Dutch moss names should be changed.
|
|
|
De Drents-Groningse mossenwerkgroep
B.O. van Zanten
|
41-56
|
The Drents-Groningse working group for bryophytes. The group is a subdivision of the Dutch Bryological Society. An account is given on the origin, history, aims and methods of working. The group consists of 10 persons, professionals and amateurs and was established in 1985 when the section plant systematics was removed from the biology training of the University of Groningen. The main objectives of the group are: 1. to study the distribution of mosses in the provinces of Drenthe and Groningen, 2. to survey certain terrains which are managed by nature conservation societies and give advice for maintaining or enhancing the bryodiversity, 3. to study the presence of sporophytes of some rarely fruiting species, 4. to study the stage of development of sporophytes in correlation with the period of observation, 5. to compare the present-day moss flora with that of the past (old reports are available of several localities), 6. to study the effect of demineralization on the moss flora. A list of the localities that have already been surveyed is given, together with a list of relevant publications and reports.
|
|
|
Vondsten van zeldzame en bedreigde mossen 2
|
57-62
|
Records of rare and threatened bryophytes 2
Annual survey of verified records of rare or threatened bryophytes found in the Netherlands.
|
|
|
Wijzigingen ledenlijst BLWG t/m 3 juli 2005
|
63-64
|
|
|
|