Article

A karyosystematic study of six interesting taxa from the Ionian Islands (Greece) is presented. The chromosome number (2n = 16) and karyotype analysis for two ecologically different populations of the Greek endemic Allium callimischon subsp. callimischon are given and its karyotype variation is also confirmed. The chromosome number (2n = 16) and karyotype morphology of Allium flavum subsp. tauricum is reported for the first time in material from Ionian Islands. Karyotype analysis of Ficaria calthifolia (2n = 16) is given for first time in Greek material. Chromosome data (2n = 22) for Freesia leichtlinii subsp. alba are presented for the first time for this taxon. Previous karyological references of Paeonia mascula subsp. russoi (2n = 10) confirm our findings from a new population from north Kefallinia isl. The first karyological attempt at Romulea bulbocodium in Greece is performed here, resulting in two ploidy levels (2n = 3x = 33 and 2n = 4x = 44) for, ecologically, different populations and additionally the basic chromosome number of the genus is discussed.