Helianthemum concolor (L. Riley) J.G. Ortega Helianthemum concolor (L. Riley) J.G. Ortega, Cat. Sist. Pl. Sinaloa: 4. 1929 sec. García-Mendoza 2011≡Halimium concolor L. Riley in Bull. Misc. Inform. Kew 1923(3): 107. 1923 syn. sec. The Plant List 2013