Interesting weed records from cereal fields in Zonguldak province (Turkey)

New floristic records of weed species were taken from cereal fields in June 2012 from localities in Akçabey village, Kayıkçılar village and from Degirmenağzı in Zonguldak province (Turkey). The records represent a total of 69 taxa belonging to 24 families from which the most frequent are Fabaceae (13,04%), Asteraceae (10,14%), Poaceae (10,14%), Rosaceae (8.7%), Apiaceae (7,25%) and Ranunculaceae (5.8%). Most of listed species are native in flora of Turkey and also occur as threatened taxa in the flora of the Czech Republic as naturalized or casual archaeophytes (Agrostemma githago, Bromus arvensis), casual neophytes (Medicago polymorpha, Trifolium tomentosum) or as native species (Aphanes australis, Filago vulgaris).