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2015 Barry Breckling   cc-by-nc-sa-3.0

Polemonium pulcherrimum (Jacob's Ladder) is a species of perennial herb in the family Polemoniaceae. They have a self-supporting growth form. They are native to Alaska, Canada, The Contiguous United States, and Western North America. They have simple, simple leaves and magenta flowers. Flowers are visited by Hemaris thysbe and Pieris angelika. Individuals can grow to 0.15 m.

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EOL has data for 17 attributes, including:

Known occurrences, collected specimens and observations of Jacob's-ladder. View this species on GBIF