2010.04.01 Austria, Vienna XXI. district (Wasserpark, 160 m AMSL).Flowering in march/april.Common especially in parks and on cemeteries - it is a species which some time ago escaped from culture but still is mostly restricted to those habitats. Its hairy stem is an important species marker.German name: Acker-GelbsternID: Fischer & al., Exkursionsflora (2008 3rd)