An overview of recent localities of rare or endangered weeds found in the northern part of central Bohemia in the years 2001–2008 is given. New localities of several critically endangered species were found: Adonis flammea, Bupleurum rotundifolium, Conringia orientalis, Erysimum repandum, Galium tricornutum, Glaucium corniculatum, Misopates orontium, Nigella arvensis.
Short comments on their ecology and distribution are added.