Crassula congesta subsp. laticephala is a short-lived, succulent herb that produces a flower stem of about 15 cm in height. The narrowly pointed leaves grow in pairs decussately arranged. This means that each successive pair is positioned perpendicular to the previous one, forming an X-shape in the stem's foliage. The leaves are pale green and hairless, in the photo displaying some pale purple at the base.
The sharpish leaf tips curve down in this subspecies, blunt ones point up in the other one, viz. C. congesta subsp. congesta.
The remains of past flowers that grow in a dense cluster upon a stem tip in winter are visible here (Vlok and Schutte-Vlok, 2010).