Doubtfully distinct from the above species. The type spacimen from Afghanistan, does look a little different by being robust and having elongated lax infructescence, small obtriangular siliculae (c. 5 mm long, 2.5 mm broad) with a prominent apical notch and somewhat deflexed pedicels The following specimens, mostly the robust ones, come near it or similar to it, but the variation in T cochleariforme, specially in fruit characters, is sufficiently wide. However, it has comparatively smaller petals 3-5 mm long, and usually smaller fruits, c.5 mm long, 2.5 mm broad. The floral and fruit characters overlap for both the species.