Polemonium Linnaeus. Jacob's-ladder.
A genus of about 25 species, of temperate regions of North America and Eurasia.
Ref: Davidson (1950); Wilken In Kubitzki et al. (2004); Worley, Ghazvini, & Schemske (2009). Show full citations.
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© Gary P. Fleming | 
© Nolan Exe, some rights reserved (CC BY), uploaded by Nolan Exe | Polemonium micranthum source | Original Image ⭷
© Nolan Exe, some rights reserved (CC BY), uploaded by Nolan Exe | Polemonium micranthum source | Original Image ⭷