nfoto Posted July 27, 2013 Share Posted July 27, 2013 Rørslett, B. 2013. Polemonium caeruleum L. (Polemoniaceae). Jacob's Ladder. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...-jacobs-ladder/ Polemonium caeruleum L.(sometimes written Polemonium coeruleum)NO: FjellflokkSE: BlågullDK: Almindelig JakobsstigeFI: LehtosinilatvaIS: Jakobsstigi DE: Himmelsleiter EN: Jacob's Ladder; Greek Valerian This is a medium tall, to 1 m, perennial species native to Eurasia in a variety of geographical races. It is frequently cultivated as an ornamental plant and thus introduced outside its native range. References:http://www.ultraviol...-r%C3%B8rslett/ Link to comment
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