The leaves of Trigonocapnos lichtensteinii are deeply divided, paired or reduced to simple, oblong components. Upper leaves are opposite, their petioles long and curved on older leaves. There are no stipules.

The leaf-tips or lobe-tips are rounded, their margins entire. The soft-textured blades are a dull creamy green to grey-green. There are tendril-like tips, modified from upper leaves (Leistner, (Ed.), 2000; Manning and Goldblatt, 1997; Bond and Goldblatt, 1984; iNaturalist).