Orchids of Wallonia [Belgium]. Appraisal of the situation of thirteen species threatened or needing particular attention [Epipactis microphylla, Epipactis leptochila, Cephalanthera longifolia, Limodorum abortivum, Spiranthes spiralis, Corallorrhiza trifida, Liparis loeselii, Hammarbya paludosa, Gymnadenia odoralissima, Dactylorhiza incarnata, Dactylorhiza sphagnicola, Orchis ustulata, Ophrys sphegodes] | Orchidees de Wallonie. Evaluation de la situation de treize especes menacees ou necessitant une attention particuliere
1998
Delforge, P. | Coulon, F. | Devillers, P. | Duvigneaud, J. | Walravens, E.
Research in Wallonia (southern Belgium) and numerous observations during 10 years by various authors and members on the "Section Orchidees d'Europe des Naturalistes belges" within the framework of covenants with the Walloon region for an environmental monitoring based on bio-indicators have led to a reappraisal of the occurrence of the Walloon orchid species. The present paper describes the situation and the dynamics of the 13 most endangered of them with an updated list of the present localities and a distribution map. It specifies also their legal status, mentions possible protection measures and evokes their present situation in the adjacent regions: Brussels-Capital region, Flemish region. The Netherlands, western Germany, Luxembourg and northern France.
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