TY - JOUR T1 - Juncus dichotomus (Juncaceae) in northwestern Italy, a xenophyte new to Europe JF - Willdenowia Y1 - 2010 DO - doi:10.3372/wi.40.40202 A1 - Filip Verloove SP - 173 EP - 177 AB - Juncus dichotomus, a native of the Americas, is reported for the first time from Europe. It is more or less widely naturalised in northwestern Italy (provinces of Biella, Novara, Torino and Vercelli) and probably largely overlooked elsewhere as a result of confusion with J. tenuis. Diagnostic features of both species (and other members of the J. tenuis group currently found in Europe, viz. J. anthelatus and J. dudleyi) are critically assessed and an identification key is presented. Taxonomy and nomenclature of J. dichotomus are discussed, especially with regard to the status of J. platyphyllus, and notes on its present distribution in Italy and its ecology are provided. Like J. tenuis, it often grows in valuable natural and seminatural habitats and locally seems to behave like an invasive environmental weed. VL - 40 JO - Juncus dichotomus new to Europe ER - TY - JOUR T1 - Journal Management of Biological Invasions JF - Journal Management of Biological Invasions Y1 - 2010 A1 - Filip Verloove SP - 1 EP - 5 KW - alien species KW - Digitaria violascens KW - Eleocharis pellucida KW - Juncus dichotomus KW - taxonomy KW - Vicia dalmatica AB - Misidentifications are an important but neglected problem in studies on plant invasions. This review shows how taxonomic education of staff and stakeholders is of great importance for correctly assessing threats provoked by alien plant species in field and literature based studies. Four randomly chosen recent examples (Digitaria violascens, Eleocharis pellucida, Juncus dichotomus and Vicia dalmatica) from Europe demonstrate that, as a result of an initial erroneous identification and/or confusion with similar harmless species, potentially noxious environmental weeds have been able to become fully naturalised. They act as “invaders in disguise” and therefore constitute a real problem for conservation management. VL - 1 UR - http://www.managementofbiologicalinvasions.net/index_file/Verloove2010.pdf ER - TY - JOUR T1 - Juncus foliosus Desf., nieuw voor de Belgische flora in Genk (Limburg, België). JF - Dumortiera Y1 - 1984 A1 - Vannerom, H. SP - 59 EP - 60 VL - 29-30 ER - TY - JOUR T1 - Juncus canadensis en Rhynchospora fusca, onvrijwillige (her-) introductie in het Vlaams district (België). JF - Dumortiera Y1 - 1997 A1 - Stieperaere, H. SP - 7 EP - 11 VL - 67 ER - TY - JOUR T1 - Vegetaties met Juncus canadensis J. Gay ex Laharpe in de Kempen JF - Dumortiera Y1 - 1981 A1 - Dick Van Straaten SP - 2 EP - 11 AB - Vegetations with Juncus canadensis J. GAY ex LAHARPE in the Campine district. This study describes a few sites of Juncus canadensis in the Campine district, a species that was first found in Belgium in 1975. Now there are known about twenty sites, all of them in the Campine district. The stands of Juncus canadensis in Belgium are not typical. The species seems to appear in stands with rather different characters of acidity, moisture and nutritional ecology. The most constant environment of Juncus canadensis is the littoral area of slightly eutrophic, disturbed fens and lakes. The following types of marsh vegetation with Juncus canadensis may be distinguished: — vegetations with Littorellion-eleaients such as Eleocharis multicaulis, Scirptis fluitans and Hypericum elodes. — marsh vegetations with Molinia caerulea, Junais bulbosus, J. effusus, Hydrocotyle vulgaris, Carex rostrata, Drepanocladus fluitans and Sphagnum spp. — acid bog vegetations: Sphagno-Rhynchosporetum albae in Erica-vegetations. VL - 19-20 ER - TY - JOUR T1 - Notities aangaande Juncus canadensis J.GAY ex LAHARPE JF - Dumortiera Y1 - 1977 A1 - R D'Hose SP - 35 EP - 36 VL - 6 ER -