@article {dum3388, title = {Twee nieuwe stadsgrassen in Belgi{\"e}: Bromus madritensis en Polypogon viridis}, journal = {Dumortiera}, volume = {90}, year = {2006}, month = {12/2006}, pages = {24-26}, chapter = {24}, author = {Filip Verloove} } @article {dum3383, title = {Polypogon maritimus, een miskende neofyt in Belgi{\"e}}, journal = {Dumortiera}, volume = {93}, year = {2008}, month = {04/2008}, pages = {26-28}, chapter = {26}, author = {Filip Verloove and Dirk De Beer and Bart van de Vijver and Walter Suys} }