Ten Echinocereus species compared through exact photographs of stems, spines and flowers. An editorial selection, not a scientific ranking. Original video contributions CC BY-SA 4.0. Photographs retain their individual licences and attribution listed below. Photograph credits: 1. File:Rubrispinus flowering.jpg; S6ann33n; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File:Rubrispinus_flowering.jpg; Whole photograph scaled and fitted, without crop; title and caption bars added. 2. File:Caryophyllales - Echinocereus pentalophus - 1.jpg; Emőke Dénes; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File:Caryophyllales_-_Echinocereus_pentalophus_-_1.jpg; Whole photograph scaled and fitted, without crop; title and caption bars added. 3. File:Echinocereus triglochidiatusUGA0807034.jpg; Dave Powell, USDA Forest Service, United States; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:Echinocereus_triglochidiatusUGA0807034.jpg; Whole photograph scaled and fitted, without crop; title and caption bars added. 4. File:Echinocereus coccineus BW 213 (14063025822).jpg; Dornenwolf from Deutschland; CC BY-SA 2.0; https://creativecommons.org/licenses/by-sa/2.0; https://commons.wikimedia.org/wiki/File:Echinocereus_coccineus_BW_213_(14063025822).jpg; Whole photograph scaled and fitted, without crop; title and caption bars added. 5. File:Echinocereus reichenbachii by RO.jpg; Rationalobserver; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0; https://commons.wikimedia.org/wiki/File:Echinocereus_reichenbachii_by_RO.jpg; Whole photograph scaled and fitted, without crop; title and caption bars added. 6. File:Echinocereus viridiflorus.jpg; Michael Wolf; CC BY 2.5; https://creativecommons.org/licenses/by/2.5; https://commons.wikimedia.org/wiki/File:Echinocereus_viridiflorus.jpg; Whole photograph scaled and fitted, without crop; title and caption bars added. 7. File:Echinocereus enneacanthus in bloom - Val Verde County TX (1).jpg; Clinton & Charles Robertson from Del Rio, Texas & College Station, TX, USA; CC BY 2.0; https://creativecommons.org/licenses/by/2.0; https://commons.wikimedia.org/wiki/File:Echinocereus_enneacanthus_in_bloom_-_Val_Verde_County_TX_(1).jpg; Whole photograph scaled and fitted, without crop; title and caption bars added. 8. File:Echinocereus engelmannii 10.jpg; Stan Shebs; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:Echinocereus_engelmannii_10.jpg; Whole photograph scaled and fitted, without crop; title and caption bars added. 9. File:E. dasyacanthus 5.jpg; G.A. Cooper; Public domain; ; https://commons.wikimedia.org/wiki/File:E._dasyacanthus_5.jpg; Whole photograph scaled and fitted, without crop; title and caption bars added. 10. File:Echinocereus poselgeri.jpg; Michael Wolf; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0; https://commons.wikimedia.org/wiki/File:Echinocereus_poselgeri.jpg; Whole photograph scaled and fitted, without crop; title and caption bars added.