Ten Aesculus species compared through exact Wikimedia Commons photographs of leaves, flowers and growth forms. 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:Horse chestnut flowers in Brodalen 4.jpg; W.carter; CC0; http://creativecommons.org/publicdomain/zero/1.0/deed.en; https://commons.wikimedia.org/wiki/File:Horse_chestnut_flowers_in_Brodalen_4.jpg; Whole-image fit and scaling; title and caption bars added. Photograph licensed under the stated source licence. 2. File:Aesculus flava2.jpg; Schlurcher; CC BY 4.0; https://creativecommons.org/licenses/by/4.0; https://commons.wikimedia.org/wiki/File:Aesculus_flava2.jpg; Whole-image fit and scaling; title and caption bars added. Photograph licensed under the stated source licence. 3. File:Aesculus pavia 3.jpg; Eric Hunt; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File:Aesculus_pavia_3.jpg; Whole-image fit and scaling; title and caption bars added. Photograph licensed under the stated source licence. 4. File:Aesculus glabra var. glabra.jpg; Isfisk; CC BY-SA 3.0; http://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File%3AAesculus_glabra_var._glabra.jpg; Whole-image fit and scaling; title and caption bars added. Photograph licensed under the stated source licence. 5. File:Aesculus parviflora, Irondale, Alabama 1.jpg; robert_alabama; CC0; http://creativecommons.org/publicdomain/zero/1.0/deed.en; https://commons.wikimedia.org/wiki/File%3AAesculus_parviflora%2C_Irondale%2C_Alabama_1.jpg; Whole-image fit and scaling; title and caption bars added. Photograph licensed under the stated source licence. 6. File:Aesculus californica Mt Burdell.jpg; Eric Hunt; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File%3AAesculus_californica_Mt_Burdell.jpg; Whole-image fit and scaling; title and caption bars added. Photograph licensed under the stated source licence. 7. File:Aesculus indica tree.jpg; Mark D'Cruz (Dcruz01); CC BY 3.0; https://creativecommons.org/licenses/by/3.0; https://commons.wikimedia.org/wiki/File%3AAesculus_indica_tree.jpg; Whole-image fit and scaling; title and caption bars added. Photograph licensed under the stated source licence. 8. File:Aesculus turbinata 7.JPG; Qwert1234; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File%3AAesculus_turbinata_7.JPG; Whole-image fit and scaling; title and caption bars added. Photograph licensed under the stated source licence. 9. File:AesculusChinensisLeaf.jpg; Fanghong; CC BY-SA 3.0; http://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File%3AAesculusChinensisLeaf.jpg; Whole-image fit and scaling; title and caption bars added. Photograph licensed under the stated source licence. 10. File:Painted buckeye Aesculus sylvatica flowers leaves.jpg; Dcrjsr; CC BY 3.0; https://creativecommons.org/licenses/by/3.0; https://commons.wikimedia.org/wiki/File%3APainted_buckeye_Aesculus_sylvatica_flowers_leaves.jpg; Whole-image fit and scaling; title and caption bars added. Photograph licensed under the stated source licence.