Crassula glomerata stems branch many times dichotomously, more frequently into the flower clusters at the top. Reducing in size upwards, the branchlets are inclined upwards, their surfaces like the leaves, smooth or rough from scales. The linear to lance-shaped leaves are sharp- or blunt-tipped.
The flowers grow solitary from the forks in the stems, forming dense, flat-topped to rounded cluster inflorescences.
Flower parts occur in fives. The oblong to egg-shaped calyx lobes are as long as or longer than the white petals and fleshy. Nectaries are present.
The plant is described in Australian botanical literature because it is an escape in sand dune regions of South Australia and Western Australia (JSTOR; http://www.flora.sa.gov.au).