Daphne: Hemerocallis, a kind of herb, is edible and its roots can be used as medicine.
Brother:
Ziti (Ziti: the name of the legendary grass in ancient books)
Zi Ming (Ming: the bud just picked in early spring)
Sweet potato (sweet potato: a kind of herb)
Sister:
Tilia amurensis (Tilia amurensis: a kind of millet)
Zitiao (potherb recorded in ancient books)
Ziyun (such as incense, perennial herb. It is fragrant and can be used as medicine. )