Russelia rugosa B.L. Rob. Russelia rugosa B.L. Rob. in Proc. Amer. Acad. Arts 43(2): 58. 1907 sec. Christenhusz 2014=Russelia steyermarkii Carlson in Fieldiana, Bot. 29(4): 272, f. 4. 1957 syn. sec. Christenhusz 2014