Romulea biflora

Manning, John C. & Goldblatt, Peter, 2001, the Arabian Peninsula and Socotra including new species, biological notes, and a new infrageneric classification, Adansonia (3) 23 (1), pp. 59-108 : 70-71

24. Flowers rose or pink with large violet blotches in the throat .................................................. 13. R. biflora

24’. Flowers without blotches in the throat .................................................................................................... 25