Galium parisiense - a new alien species for the Czech Republic

.Two specimens of Galium parisiense L. having their origin in the wild in the Czech Republic have been found during the study of the herbaria of PR and BRNM. The species has never been reported for the country before. The earlier collection is from the present-day area of Prague in central Bohemia, the later one from a field near the village of Nedachlebice in southeastern Moravia. Both localities are situated on the northeastern border of the species distribution. No recent occurrence of the species in the wild in the Czech Republic has been reported, except for the single find in a concrete flower-bowl in Brno, southern Moravia. Infraspecific variation and its taxonomic evaluation is discussed in the present paper.