Kitaibelia vol. 6 – no. 2. (2001) p.329-345.
Új adventív növény a hazai flórában: a sárga bohócvirág (Mimulus guttatus Fischer ex DC., Scrophulariaceae)
Balogh Lajos – Simon Tibor – Szabó Mária – Vidéki Róbert
Recently, a new adventive plant has reached Hungary. The yellow monkey-flower – Mimulus guttatus DC. (Scrophulariaceae) – is already naturalized in most parts of Europe, first of all along the river banks. The present study gives some information on the difficulties of nomenclature, paying special attention to the long-standing confusion with M. luteus L. The detailed morphological description includes good features for the distrinction of the two species. Besides the presentation of ecological, phenological and spread characteristics, the European career of the yellow monkey-flower is also discussed.
M. guttatus has not been known from the present area of Hungary, although, data are available from the northern and north-eastern part of Carpathian Basin. The study presents the circumstances of its recent occurrence in West Hungary in details. First it was found on the banks of Danube (Győr-Moson-Sopron County, 1994, Simon – Szabó) later on the banks of Rába River (Vas County, 2000, Balogh – Vidéki) – in both cases in the relatively wet types of the Echinochloo-Polygonetum lapathifolii association (that belongs to the ordo Bidentetalia tripartiti). Beyond this, the study contains the revision results of Mimulus material found in Hungarian herbaria. The oldest data relating to M. guttatus - both for spontaneous (1847) and cultivated (1880) occurences – are available (collected by L. Vágner) from the North-east Carpathians, Máramaros County (these localities belong today to Ukraine). Spontaneous occurrence of M. luteus is not known up to now in the Carpathian Basin. The oldest data on its cultivated form are available from Vas County from 1830s and 1840s (collected by I. Szenczy).
Since the recent occurences of M. guttatus are owing to the rivers flowing from west (Danube and Rába) further occurrences can be expected along these rivers. However we hope, Hungary will not been invaded by the species as it happened in Britain and East Germany. Our riverine vegetation could be saved from this new invasive alien plant.