Three Nerved Squirrel Tail is a small, prostrate herb, with ascending branches. Leaves are 2x1 cm, upper stalkless, elliptic or ovate, tip obtuse. Flowers are dull white with blue tinge, in 10 cm long, spikes at the end of branches. Bracts are lancelike, leafy, white, with prominent green nerves. Sepal cup is 5 mm long, velvety. Flowers 1 cm long, petals unequal, lower tailed. Capsule is 1.2 cm long, nearly spherical, velvety. Seeds usually 4, densely clothed with tubercles. Flowering: January-June.