Chinese name: duck child celery, scientific name: Cryptotaenia japonica, umbelliferae duck child celery genus perennial herbs.

Botanical traits: traits vary by origin, basal or lower cauline leaves stalked, stalk 5-20 cm long, 3-foliolate; terminal leaflets rhombic-obovate, subsessile, irregularly acute or 2-3-lobed. Inflorescences paniculate, peduncles unequal, involucral bracts and bracteoles 1-3, linear, caducous; umbels with 2-4 flowers; pedicels very unequal; petals obovate, apically inflexed ligule. Fruit linear-oblong, 4-6 mm long, 2-2.5 mm wide, slightly constricted on commissure, endosperm nearly flat on ventral surface. Fruit linear-oblong, 4-6 mm long, 2-2.5 mm wide, slightly constricted on the commissure, endosperm ventral surface nearly straight.