Cassytha glabella is a hairless, parasitic plant that scrambles across a range of woody plant species It differs from the other species of Cassytha in being both hairless and having sessile fruits and flowers. The stems are more slender than those of the other species, especially C. melantha.

n.b. a fourth species, C. pedicellosa, has been described from Tasmania. It is only known from one, old specimen, and may not exist as a true species.