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PL
Wydano przy pomocy finansowej Uniwersytetu Łódzkiego oraz Komitetu Badań Naukowych
EN
The rich vascular flora of the Wierzyca valley also includes plants of segetal communities. Among them are common species, as well as some of the species that are endangered or threatened on a national scale (Warcholińska 1994). The Wierzyca valley provides a refuge for them in the Gdańsk region (Buliński 1993, 1994a). The protection of these plants, preventing, among other things, the use of chemicals in agriculture, may save the rare species of segetal flora from extinction (Buliński 1995).
PL
Wydano przy pomocy finansowej Uniwersytetu Łódzkiego oraz Komitetu Badań Naukowych
EN
The cropfield flora of three physical-geographical units of northern Poland has been classified according to the endangerraent categories used in the Polish Red Book of Plants (Zarzycki, Kaźmierczakowa 1993). The largest number of weeds that are endangered or vulnerable are found in the Lower Vistula Valley. They include: Adonis aestivalis, Anagallis arvensis, Camelina microcarpa, Euphorbia exigua, Fumaria vaillantii, Holosteum umbellatum, Ranunculus arvensis, Sherardia arvensis and Veronica opaca. In the Elbląg Elevations Spergula arvensis ssp. maxima has become extinct, and the following are vulnerable: Agrostemma githago, Anagallis arvensis, Dromus secalinus, Camelina microcarpa, Geranium dissectum, Holosteum umbellatum and Veronica opaca. In the Charzykowy Plain Agrostemma githago, Anagallis arvensis and Camelina microcarpa are endangered by extinction.
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