Cytological work was also conducted on 3 individuals of H. peploides, resulting in a karyotype con rming prior chromosome number counts for Icelandic populations as well as the discovery of 2 possible satellites on one pair of chromosomes.
Litningagreining var gerð á þremur einstaklingum fjöruarfa sem staðfesti þekkta litningatölu úr íslenskum fjöruarfastofnum og sýndi mögulega tvö tungl (sattelite) á tveimur litningum.