Lichen

Lichen can be found in various places in the Forgotten Realms, including the starwood area of the forest of Cormanthor.

Medquat
This crimson lichen is found in hollow logs in the starwood area of the forest of Cormanthor. It tastes like lemons and is highly prized in Cormyr. Scorpions are attracted to it.

Fire Lichen
While many Underdark plants get their energy from magic or rotting organic matter, the fire lichen obtains its energy from warmth. Given that fact, fire lichen usually grows in areas of heat, and is sometimes confused with the more dangerous fire fungus. Fire lichen can be mashed into a spicy paste, or fermented into a hot liquor.

Wisp Lichen
This white lichen native to the Underdark is dangerous. It secretes an adhesive that can hold large creatures and paralyze them. It then slowly, painfully digests them. The true danger of the white lichen, however, is the fact that many dangerous Underdark predators and scavengers can be found lurking near wisp lichens, hoping to get a free meal.