Small shrub. Leaves evergreen, to about 4 cm long, 2-4 mm wide, entire, linear to narrowly oblong or spoon-shaped. Flower petals white; winter. Fruit a 6-7 mm long silicula, broadly winged from the base.
This is the most widely grown candytuft available in a range of cultivars; names listed include 'Dwarf Fairy', 'Iceberg', 'Little Gem', 'Snow Crystal', 'Snowflake', 'White Cloud' and 'White Flash'.
The winter flowering I. semperflorens L. from Italy and Sicily is occasionally cultivated; it has a narrowly winged fruit much wider than long.
Source: (1997). Brassicaceae. In: . Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.