Romulea congoensis

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 : 69

3. Inner bracts rust-colored and with broad scarious margins, often appearing entirely scarious; peduncles fairly thick, 1-1.8 mm diam ...................................................................................................... 4. R. congoensis

3’. Inner bracts green with narrow or broad membranous margins, uniformly pale or streaked with brown; peduncles slender, 0.6-1 mm diam .......................................................................................................... 4