Ten Sempervivum species compared through exact Wikimedia Commons photographs of rosettes, leaves and flowers. 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:Sempervivum tectorum Almindelig Husløg.jpg; Malene Thyssen, User:Malene; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File%3ASempervivum_tectorum_Almindelig_Husl%C3%B8g.jpg; Subject-aware vertical crop and scaling; title and species caption bars added. Photograph licensed under the stated source licence. 2. File:Sempervivum arachnoideum.jpg; Schnobby; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3ASempervivum_arachnoideum.jpg; Subject-aware vertical crop and scaling; title and species caption bars added. Photograph licensed under the stated source licence. 3. File:Sempervivum-calcareum.jpg; Kurt Stueber; CC BY-SA 2.5; https://creativecommons.org/licenses/by-sa/2.5; https://commons.wikimedia.org/wiki/File%3ASempervivum-calcareum.jpg; Subject-aware vertical crop and scaling; title and species caption bars added. Photograph licensed under the stated source licence. 4. File:Sempervivum montanum - close up.jpg; Mister rf; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File%3ASempervivum_montanum_-_close_up.jpg; Subject-aware vertical crop and scaling; title and species caption bars added. Photograph licensed under the stated source licence. 5. File:Sempervivum wulfenii 001.JPG; H. Zell; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3ASempervivum_wulfenii_001.JPG; Subject-aware vertical crop and scaling; title and species caption bars added. Photograph licensed under the stated source licence. 6. File:Sempervivum grandiflorum 001.JPG; Meneerke bloem; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3ASempervivum_grandiflorum_001.JPG; Subject-aware vertical crop and scaling; title and species caption bars added. Photograph licensed under the stated source licence. 7. File:Sempervivum ciliosum 01.jpg; Michael Wolf; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3ASempervivum_ciliosum_01.jpg; Subject-aware vertical crop and scaling; title and species caption bars added. Photograph licensed under the stated source licence. 8. File:Sempervivum marmoreum (51513211472).jpg; xulescu_g; CC BY-SA 2.0; https://creativecommons.org/licenses/by-sa/2.0; https://commons.wikimedia.org/wiki/File%3ASempervivum_marmoreum_%2851513211472%29.jpg; Subject-aware vertical crop and scaling; title and species caption bars added. Photograph licensed under the stated source licence. 9. File:Sempervivum dolomiticum.JPG; Guérin Nicolas ( messages ); CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3ASempervivum_dolomiticum.JPG; Subject-aware vertical crop and scaling; title and species caption bars added. Photograph licensed under the stated source licence. 10. File:Sempervivum pittonii 001.JPG; H. Zell; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3ASempervivum_pittonii_001.JPG; Subject-aware vertical crop and scaling; title and species caption bars added. Photograph licensed under the stated source licence.