2011-04-03 Lower Austria, district Wien-Umgebung (Klosterneuburger Au, 165 msm Quadrant 7663/4).German name: Efeu-EhrenpreisID: Fischer & al., Exkursionsflora A/FL/SdT (2008 3rd); according to this source, it is hybidogen from V. triloba V. sublobata (but now a species in its own right); flower is light blue with a distinct white centre