Cormous geophyte up to 25cm, corms symmetrical, bell-shaped, with a circular rim of fibres. Stem sometimes branched above the ground. Leaves 2-5, basal and cauline, narrowly 4-grooved, 0.5-1mm in diameter. Flowers pink, sometimes with red lines in the yellow cup, tepals oblanceolate; inner bract with wide membranous margin.

Latin: gracilis = slender, -imus = very; referring to the very slender appearance of this species.

The flowers of the genus Romulea only open on warm sunny days, usually around midday.