Note on some populations of Armeria maritima (Mill.) Willd. from the south and the north of the Netherlands

Populations of Armeria maritima (Mill.) Willd. collected in the South and in the North of the Netherlands are very different from each other. The Southern (Zeeland and Noord-Brabant) populations typically belong to ssp. maritima. The populations from the North (Noord- Holland and Friesland) must be referred to ssp. intermedia in which atypical forms intermediate between the atlantic ssp. maritima and the north-continental ssp. elongata are put together. The occurrence of ssp. intermedia is not related to particular ecological conditions. The ratio between “maritima” and “elongata” characters does not show a gradual trend from ssp. maritima to ssp. elongata along the coasts from the island of Texel to Denmark.