Ten Polemonium species compared through exact Wikimedia Commons photographs of flowers and foliage. An editorial selection, not a scientific ranking. Original video contributions: CC BY-SA 4.0. Individual photographs retain the licences and credits listed in attribution; public-domain and CC0 photographs remain so. Photograph credits: 1. File:Polemonium caeruleum D.jpg; Wouter Hagens; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3APolemonium_caeruleum_D.jpg; Portrait crop and scaling; title and caption bars added. Photograph retains the stated source licence. 2. File:Polemonium_reptans_2009.jpg; Ryan Kaldari; Public domain; ; https://commons.wikimedia.org/wiki/File%3APolemonium_reptans_2009.jpg; Portrait crop and scaling; title and caption bars added. Photograph retains the stated source licence. 3. File:Polemonium_pulcherrimum_6317.JPG; Walter Siegmund (talk); CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3APolemonium_pulcherrimum_6317.JPG; Portrait crop and scaling; title and caption bars added. Photograph retains the stated source licence. 4. File:Polemonium_viscosum_1.jpg; J Brew; CC BY-SA 2.0; https://creativecommons.org/licenses/by-sa/2.0; https://commons.wikimedia.org/wiki/File%3APolemonium_viscosum_1.jpg; Portrait crop and scaling; title and caption bars added. Photograph retains the stated source licence. 5. File:Polemonium_pauciflorum_1.jpg; Ghislain118 (AD) http://www.fleurs-des-montagnes.net; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3APolemonium_pauciflorum_1.jpg; Portrait crop and scaling; title and caption bars added. Photograph retains the stated source licence. 6. File:Polemonium_carneum.jpg; Adamschneider; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File%3APolemonium_carneum.jpg; Portrait crop and scaling; title and caption bars added. Photograph retains the stated source licence. 7. File:Polemonium_californicum_6290.JPG; Walter Siegmund (talk); CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3APolemonium_californicum_6290.JPG; Portrait crop and scaling; title and caption bars added. Photograph retains the stated source licence. 8. File:Northern Jacob's ladder (Polemonium boreale) in Skansbukta, Svalbard (1).jpg; Andreas Weith; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File%3ANorthern_Jacob%27s_ladder_%28Polemonium_boreale%29_in_Skansbukta%2C_Svalbard_%281%29.jpg; Portrait crop and scaling; title and caption bars added. Photograph retains the stated source licence. 9. File:Polemonium_foliosissimum_wild1.jpg; JerryFriedman; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3APolemonium_foliosissimum_wild1.jpg; Portrait crop and scaling; title and caption bars added. Photograph retains the stated source licence. 10. File:Sky_Pilot_(Polemonium_eximium)_2.jpg; Will Beback ( talk · contribs ); CC BY 3.0; https://creativecommons.org/licenses/by/3.0; https://commons.wikimedia.org/wiki/File%3ASky_Pilot_%28Polemonium_eximium%29_2.jpg; Portrait crop and scaling; title and caption bars added. Photograph retains the stated source licence.