Berduskan Lichen

A fast-growing, aggressive, parasitic lichen which may only grow in the swamps near Berdusk. It intertwines itself so tightly with the fiber of plants it invades that it does not affect the taste of its host - though it is highly poisonous to humanoids, causing severe stomach problems when ingested, and is even dangerous to handle without gloves.

It is potentially an uncatalogued species as it is unknown to even university-educated agrarians and locals alike. As a naturally occurring plant it does not register as magical when probed by ''detect magic. ''A master herbalist could use it as a biological weapon to undermine the crops of a region or to poison a water supply; similar lichens are used throughout Faerun as tools of cabbatage sabotage. Healers may be able to use it for positive means to induce vomiting when such things are desired.