Some data on the karyotypes of Stellaria nemorum L. ssp. nemorum and Stellaria nemorum L. ssp. glochidisperma Murb. in the Netherlands

Both Stellaria nemorum L. ssp. nemorum and St. nemorum L. ssp. glochidisperma Murb. occur in the Netherlands, mainly in two small niches: ssp. nemorum is found in the south of the province of Limburg whereas ssp. glochidisperma is growing in the neighbourhood of Norg (province of Drente). The karyograms of both subspecies are the same (fig. 1); both have a diploid number of 26 chromosomes. These data are in agreement with those of Peterson (1935, 1936). The morphology of the chromosomes is described.