Plants Studied in Herbology Mandrake - The cry of a fully grown Mandrake can be fatal, but its roots have medicinal uses. Venomous Tentacula - A dangerous plant with tentacles that can strangle and poison those who aren't careful. Devil's Snare - A magical plant that ensnares its victims with its vines, only to be escaped by relaxing, not fighting. Gillyweed - Allows the consumer to grow gills and swim underwater for extended periods. Fanged Geranium - A plant with sharp, carnivorous teeth that can bite if disturbed.
