What is the meaning of northern Jacob's ladder?

Perennial erect herb with white flowers; circumboreal.
- synonyms: Polemonium boreale

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APA	WordNet. (2010). northern jacob's ladder. Retrieved September 30, 2026, from http://smartdefine.org/northern_jacob%27s_ladder/definitions/1240748
Chicago	WordNet. 2010. "northern jacob's ladder" http://smartdefine.org/northern_jacob%27s_ladder/definitions/1240748 (accessed September 30, 2026).
Harvard	WordNet 2010, northern jacob's ladder, Smart Define, viewed 30 September, 2026, <http://smartdefine.org/northern_jacob%27s_ladder/definitions/1240748>.
MLA	WordNet. "northern jacob's ladder" 23 October 2010. Web. 30 September 2026. <http://smartdefine.org/northern_jacob%27s_ladder/definitions/1240748>

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