The history and progress of floristic knowledge on Amaranthaceae occurring in Greece and adjacent Balkan countries are briefly outlined and changes in family circumscription and generic delimitation are addressed. The new combinations Amaranthus blitoides [var. blitoides] f. thellungii (Sennen ex Thell.) Raus and A. blitoides [var. reverchonii] f. densifolius (Uline & W. L. Bray) Raus are published. The names Achyranthes argentea Lam. and Amaranthus commutatus A. Kern. ex Hayek are lectotypified, the former a synonym of Achyranthes sicula (L.) All , the latter of Amaranthus blitum L. Amaranthus commutatus A. Kern. has long been known as a designation with no nomenclatural value for a fictitious taxon but is still erroneously accepted in current floristic online sources.
