Leaf lamina surface and margin glabrous, petiole usually glabrous or occasionally sparsely hairy on the lower half; hairs spreading, up to 0.4 mm long. Sepals glabrous.
Auckland Islands.
Cardamine depressa subsp. depressa is known from Auckland Islands, including Adams Island and Auckland Island.
Cardamine depressa subsp. depressa occurs among coastal herbfield and rocks and along stream margins.
Cardamine depressa subsp. depressa is assessed as having a conservation status of At Risk–Naturally Uncommon, with the qualifiers Data Poor, Island Endemic and One Location (de Lange et al. 2018). The qualifier Data Poor is applied because information on the number and size of the populations is needed.
Flowering November–January; Fruiting November–February.