Calobota sericea is a shrub that grows to 1,5 m in height and also spreads. It has narrow, trifoliolate leaves with lance-shaped leaflets that have pointy tips. They are blue-green in colour with a velvety covering of silver hairs. Pale yellow flowers, consistent with the flower shape typical of the Fabaceae family grow in dense racemes above the foliage. Flowering happens from midwinter to early spring.
The plant is found in the northern parts of the Western Cape and in Namaqualand in the Northern Cape where it has a stable population early in the twenty first century. It grows on sandy flats and lower, stony slopes in semi-arid conditions with low winter rainfall and hot, dry summers. This specimen was photographed flowering in August near Kamieskroon.
This plant used to be called Lebeckia sericea. With the reinstatement of the Calobota genus sixteen species with hairy, pinnate leaves were separated from the Lebeckia genus that is left with plants that have hairless, simple leaves (Manning, 2009; Vlok and Schutte-Vlok, 2010; Bond and Goldblatt, 1984; iSpot).