Concerning the biological activities, the methanolic extract of Nicotiana glauca showed the highest antioxidant activity, while the extract of Calligomum polygnoidessubsp. comosum exhibited the weakest antioxidant activity. While the methanolic extract of Pulicaria undulatAsubsp.undulata showed the highest antimicrobial activity, followed by the extracts of Hyoscyamus muticus , Nicotiana glauca and finally by Calligomum polygnoidessubsp. comosum. On the other hand, the aqueous extract of Nicotiana glauca showed the highest inhibition precentages of seed germination, radical growth and plumale...