Whitfieldia elongata (P.Beauv.) De Wild. & T.Durand, Bull. Soc. Roy. Bot. Belgique Compt. Rend. 38: 110 1899. (Syn: Ruellia elongata P.Beauv.; Ruellia longiflora Nees [Invalid]; Whitfieldia longiflora S.Moore; Whitfieldia longifolia T.Anderson; Whitfieldia longifolia var. perglabra (C.B. Clarke) Hutch. & Dalziel; Whitfieldia perglabra C.B. Clarke; Whitfieldia subviridis C.B. Clarke; Whitfieldia tanganyikensis C.B. Clarke); . Benin to […]