Summary[
edit] Description: English: Location taken: American Plant Food Company, 7405 River Road, Bethesda MD. Names: Polemonium caeruleum, Almindelig Jakobsstige, Blågull, Blaue Himmelsleiter, blue Jacob's ladder, Charity, Fjellflokk, Greek valerian, Greek-Valerian, Jacob´s-Ladder, Jacob's Ladder, Jacobs Ladder, Jakobsladder, Jakobsladder (plant), Kék csatavirág, Lehtosinilatva, Mavi göyümçiçək, Mėlynasis palemonas, Polemônio, polémoine, Polémoine bleue, Portuguese, valériane grecque, Wielosił błękitny, Zilā kāpnīte, Синюха блакитна, Синюха голубая, Фаягөл, Шайтанкелмес, 꽃고 Classification: Plantae > Magnoliophyta > Magnoliopsida > Ericales > Polemoniaceae > Polemonieae > Polemonium > Polemonium caeruleum. Date: 21 May 2007. Source: source: David Stang. First published at ZipcodeZoo.com. Author: Photo by David J. Stang.