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• Data on alien vascular plant species in Hungary II. (7–12)

  253–264

  Attila Takács

  János Csiky

  Jiři Danihelka

  Szabolcs Kis

  Dániel Kovács

  Ábel László-Bencsik

  Attila Lengyel

  Attila Molnár V.

  Attila Rigó

  Anna Varga

  Tamás Wirth

  Views:

  413

  In the second part of our series providing data on alien plant species in Hungary, we add­ress taxa belonging to the families Cabombaceae, Brassicaceae, Rubiaceae, Buxaceae, Violaceae and Compositae. We present new records of the distribution of Cabomba caroliniana on the Körös Plain: along the Élővíz Canal between the towns of Békés and Békéscsaba the species was found at 17 sites, covering a total area of more than 630 m² in slightly alkaline, low-conductivity water that remains unfrozen in winter. In Szentendre, we document a transient escape of Isatis tinctoria and several popu­lations of Rubia tinctorum, some of which can be traced back to former cultivation. We report the first extra-garden, woodland occurrence of Pachysandra terminalis in Hungary and relate it to the dumping of green waste. We clarify the status of Viola prionantha in the Hungarian flora and list numerous oc­currences mainly associated with urban pavements, parks and cemeteries. We detected a new occurrence of the Atlantic halophyte Cochlearia danica on the Great Hungarian Plain, near Karcag, along the Main Road 4. Finally, we describe the first Hungarian record of Symphyotrichum squamatum from pioneer silt surfaces along a canal near Szeged, highlighting its potential invasive role.

• Escaping of Euphorbia myrsinites from cultivation in Eger (E Hungary)

  253–256

  Peregrym Mykyta

  Views:

  290

  Euphorbia myrsinites L. (Euphorbiaceae) is a well-known ornamental plant with native dis­tribu­tion around the Mediterranean Basin, the Black Sea, the Caucasus region and Minor Asia. Its es­cape from cultivation and its naturalization in Western and Central Europe as well as in North America was reported in many cases. In Hungary, the casual escape of E. myrsinites has been documented more than fifty years ago and new observations were recently reported from different regions of the country. Here, I discuss a new record of the species from the town of Eger (E Hungary). The obtained data allow considering E. myrsinites as a locally naturalized species in the flora of Hungary. According to standard­ized criteria, the species may be able for local invasions too, but further observations are needed to accurately determine its present status in Hungary.