2010.04.06 Austria, Lower Austria, district Bruck/Leitha (Braunsberg, 175 m AMSL).Flowering in april; polymorphic flower colour - from (light to dark) yellow to blue to violet, usually even in the same habitat: the flower does not offer any nectar and tricks insects into pollinating them nevertheless by displaying different colours.Not uncommon in its (very rare) habitat: does not only need poor soil but also stony one with some open patches free of grass.German name: Zwerg-SchwertlilieID: Fischer & al., Exkursionsflora (2008 3rd)