Pan, B.; Wang, B.-M.; He, J.-Y.; Wen, F. PRIMULINA VERSICOLOR AND P. ALUTACEA SPP. NOV. (GESNERIACEAE), TWO NEW SPECIES WITH YELLOW FLOWERS FROM NORTHERN GUANGDONG, CHINA. Edinburgh J. Bot. 2016, 73 (1), 25-37. https://doi.org/10.1017/S0960428615000268.