DOI: 10.17110/StudBot.2019.50.1.225 Studia bot. hung. 50(1), pp. 225–240, 2019 AMENDMENTS TO THE ALIEN FLORA OF THE REPUBLIC OF MOLDOVA Csaba Molnár1*, András István Csathó2, Ábel Péter Molnár3 & Dániel Pifkó4 1*H–3728 Gömörszőlős, Kassai u. 34, Hungary;
[email protected] 2H–5830 Battonya, Somogyi B. u. 42/A, Hungary 3H–9400 Sopron, Mátyás király utca 20, Hungary 4Department of Botany, Hungarian Natural History Museum, H–1431 Budapest, Pf. 137, Hungary Molnár, Cs., Csathó, A. I., Molnár, Á. P. & Pifk ó, D. (2019): Amendments to the alien fl ora of the Republic of Moldova. – Studia bot. hung. 50(1): 225–240. Abstract: In this paper, eleven alien plant species are presented, two of them are reported for the fi rst time in the Republic of Moldova (Euphorbia maculata, Gaillardia pulchella), one of them has so far been reported only from a botanical garden (Oenothera glazioviana), and eight species were previously known from a few localities in Moldova (Amaranthus powelii, Centaurea diff usa, Grinde- lia squarrosa, Gypsophila perfoliata, Ruta graveolens, Silphium perfoliatum, Sorghum halepense and Tragus racemosus). We a lso present an indigenous species which behaves as invasive (Rumex thyrsi- fl orus). We c ollected plants primarily on roadsides, along railway lines and in settlements, less oft en in natural habitats. Our goal is to report scattered data here. Voucher specimens were deposited in the Hung arian Natural History Museum, Botanical Department, Herbarium Generale (BP). Key words: alien plants, invasive species, railway lines, road margins, synanthropic fl ora, urban fl ora INTRODUCTION Some alien species may become invasive, threatening natural and agricul- tural ecosystems, causing damages to the economy and human health (McNeely 2001, Wittenberg & Cock 2001, Csiszár & Korda 2015).