Homalocephala polycephala subsp. xeranthemoides

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Homalocephala polycephala subsp. xeranthemoides (J.M.Coult.) Vargas & Bárcenas in PhytoKeys 111: 49. 2018 sec. Vargas-Luna & al. 20181

≡Echinocactus polycephalus var. xeranthemoides J.M.Coult. in Contr. U.S. Natl. Herb. 3: 358. 1896 syn. sec. ???
≡Echinocactus xeranthemoides (J.M.Coult.) Engelm., Fl. Rocky Mts.: 579. 1917 syn. sec. Kew WCVP (2019)2
≡Emorycactus xeranthemoides (J.M.Coult.) Doweld in Succulenta (Netherlands) 75: 270. 1996 syn. sec. Kew WCVP (2019)2
≡Echinocactus polycephalus subsp. xeranthemoides (J.M.Coult.) N.P.Taylor in Cactaceae Consensus Init. 5: 12. 1998 syn. sec. Vargas-Luna & al. 20181
–Echinocactus xeranthemoides (J.M.Coult.) Engelm. ex K.Schum., Gesamtbeschr. Kakt.: 452. 1897–1899, nom. inval., syn. sec. Vargas-Luna & al. 20181,3,4

1. Vargas-Luna, M.D., Hernández-Ledesma, P., Majure, L.C., Puente-Martínez, R., Hernández Macías, H.M. & Bárcenas Luna, R.T. 2018: Splitting Echinocactus: morphological and molecular evidence support the recognition of Homalocephala as a distinct genus in the Cacteae. – PhytoKeys 111. http://doi.org/10.3897/phytokeys.111.26856 , 2. Kew WCVP (2019), 3. not accepted, 4. IPNI 2000+: International Plant Names Index. – The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens – http://www.ipni.org: 02 sept 2020

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