Yildirim, H., Özüdoğru, B., Özdöl, T., Can, I.D., Pirhan, A.F., Balos, M.M. and Arasan, Şükrü 2025. An extraordinary new species from western Anatolia (Türkiye): Umbilicus choripetalus (Crassulaceae). Phytotaxa. 734, 2 (Dec. 2025), 160–172. DOI:https://doi.org/10.11646/phytotaxa.734.2.2.