The small, brightly yellow flowers of Kalanchoe longiflora are urn-shaped. They grow on erect stems in loosely branched, corymb-shaped clusters.
The long flower tube is formed by four petals, from 11 mm to 14 mm in length. The petal lobes spread around the flower mouth. They are triangular in shape and up to 3 mm long. The specific name, longiflora, refers to these tubes.
The sepals at the flower base are triangular. The flowers appear in winter (http://pza.sanbi.org).