Amaranthus blitum L. subsp. emarginatus (MOQ. ex ULINE et W. L. BRAY) CARRETERO, MUNOZ GARM. et PEDROL. the new invasive subspecies native to the tropics occurs now also in Slovakia and Hungary

摘要

During the research of the synanthropic flora and vegetation in the river harbours, river banks and similar sites in the Central Europe, we have found the subspecies Amaranthus blitum L. subsp. emarginatus (MOQ. ex ULINE et W. L. BRAY) CARRETERO, MUNOZ GARM. et PEDROL.. [in var. pseudogracilis (THELL.) LAMBINON, (Fig. 2,3)] also in Slovakia (2004) and Hungary (1982, 1994). We have determined it as a locally new adventive subspecies that belongs to the taxonomic group of Amaranthus blitum agg. The A.b. subsp. emarginatus is native to the tropics of the northern and southern hemisphere. It grows in sites rich on nitrates such as natural riverbanks or ruderal and segetal sites. It invades some parts of Europe and North America where it behaves like aneoindigenophyt or epecophyt.