TY - JOUR T1 - derMerkwaardige plantencollecties van twee antropogene zaadbanken in Gent (Oost-Vlaanderen, België) JF - Dumortiera Y1 - 2012 A1 - Filip Verloove A1 - Geert Heyneman SP - 19 EP - 24 AB - Remarkable plant collections from two anthropogenic seed banks in Ghent (prov. of Oost-Vlaanderen, Belgium). In 1994-1995 and 2001-2002, two demolition areas in the city of Ghent yielded a remarkable assemblage of exotic vascular plants. All species are obviously related to previous industrial, horticultural and/or military activities and germinated from long-buried persistent seed banks. The species lists reflect the well-known longevity of seeds of the Fabaceae and Malvaceae families. Fifteen adventitious taxa of various origins were new to Belgium. VL - 100 ER - TY - JOUR T1 - Chenopodium berlandieri, een in Vlaanderen miskende neofyt JF - Dumortiera Y1 - 2006 A1 - Filip Verloove A1 - Ward Vercruysse A1 - Geert Heyneman SP - 20 EP - 26 VL - 88 ER - TY - JOUR T1 - Hydrocotyle ranunculoides L.f. (Grote waternavel), snel uitbreidend in de omgeving van Gent (Oost-Vlaanderen, België) JF - Dumortiera Y1 - 1999 A1 - Filip Verloove A1 - Geert Heyneman SP - 16 EP - 20 AB - Hydrocotyle ranunculoides L. f., an invasive neophyte in the surroundings of Ghent (East-Flanders, Belgium). Hydrocotyle ranunculoides — a North American troublesome aquatic weed species — is rapidly spreading in ditches and small streams in the vicinity of Ghent. Obviously, the species has been introduced intentionally for horticultural purposes and for experimental waterpurification and escaped with rapidity ever since. Its actual distribution pattern is drawn, an identification key for the genus Hydrocotyle in Belgium is proposed and further ecologie and taxonomie notes are provided. VL - 74 ER -