Romulea sabulosa

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 : 72

6. Leaves c. 1 mm diam., filiform with 4 narrow grooves ...................................................... 73. R. sabulosa

6’. Leaves 2-5 mm wide., somewhat swollen with 4 wide grooves .................................................................. 7