TY - JOUR T1 - Drie slecht gekende taxa van het genus Calystegia(Convolvulaceae) in België JF - Dumortiera Y1 - 2012 A1 - Filip Verloove SP - 25 EP - 29 AB - Three little-known taxa of the genus Calystegia (Convolvulaceae) in Belgium. Recent fieldwork and a thorough herbarium revision have resolved some taxonomic problems within the genus Calystegia in Belgium. The enigmatic and non-native Calystegia silvatica is reliably reported for the first time. It is probably often overlooked and seems well-naturalised locally. Several additional records (including a recent one) are provided for non-native Calystegia pulchra. Finally, we ascribe pink- flowered forms of native Calystegia sepium to subsp. sepium f. colorata. A key for the identification of all Belgian taxa of the genus Calystegia is provided. VL - 100 ER - TY - JOUR T1 - Mollugo verticillata, in België een obligate spoorwegadventief JF - Dumortiera Y1 - 2004 A1 - Filip Verloove SP - 7 EP - 9 AB - Mollugo verticillata as an alien of railway yards in Belgium. Mollugo verticillata L. (Molluginaceae), a South American alien, has been found several times in the past five years in Belgium, often in abundance and always confined to railway yards. The species history in Belgium is reviewed and its status outside the area of origin is discussed. VL - 82 ER - TY - JOUR T1 - Rumex x erubescens en Rumex stenophyllus (Polygonaceae), twee in België miskende taxa JF - Dumortiera Y1 - 2008 A1 - Filip Verloove SP - 4 EP - 8 VL - 95 ER -