Here is a list of the types of beneficial herbs which exist in ADOM, arranged roughly in order of utility (the order is subjective and mostly based on my experience of playing High Elven Druids).

  1. Morgia root. This herb can be eaten to train your Willpower and Toughness up to 25, which is very useful (high Toughness means high maximum hit points, high Willpower helps with spellcasting and confusion resistance).
  2. Moss of mareilon. This herb can be squeezed to train your Dexterity up to 25, which increases your speed and helps with dodging attacks. I rate it slightly below morgia root because High Elves seem to have good Dexterity to start with, and anyone can get their Dexterity to 99 by eating the corpses in the Bug Temple (this will no longer be possible in version 1.0.1).
  3. Stomafillia. This herb has a high food value. Cursed stomafillia only satiates slightly, but uncursed stomafillia makes you satiated and blessed stomafillia makes you bloated. Since being bloated slows you down and prevents you from eating useful corpses, I prefer to use cooked lizards as my main food source. However, blessed stomafillia herbs make very good sacrifices if you sacrifice lots at once, and you may obtain a large pile of them before you have large quantities of gold. Note that stomafillia has an evil twin, the stomacemptia herb, which makes you hungrier.
  4. Spenseweed. This herb can be rubbed on the skin to heal your wounds. Obviously, this is very handy in the early game. It becomes less important later on - you will always need healing, but healing spells weigh nothing and cannot be destroyed, and the more powerful ones have a greater healing effect than herbs. Fighter types may rate the healing herbs higher than I do.
  5. Pepper petal. This is another healing herb, which must be eaten to work. Since it has an evil twin (burb roots, which are acidic) and cannot be eaten when bloated, it is inferior to spenseweed.
  6. Curaria mancox. This herb cures sickness when eaten. Sickness doesn't happen that often, especially if you try to kill monsters which have sickness attacks from afar, but when it happens it is a serious problem. Almost all your stats are reduced, you hardly heal at all, and you could even die from it. If you know the Cure Disease spell, it eliminates the need for curaria mancox. Curaria mancox has an evil twin, the devil's rose, which causes sickness.
  7. Alraunia antidote. This herb cures poisoning when eaten. I rate it below curaria mancox because potions of cure poison are fairly common and there are two spells (Slow Poison and Neutralise Poison) which can be used to fight poisoning. Also, poison wears off naturally over time (faster if you are poison resistant) - sickness eventually wears off too, but seems to take much longer. Alraunia antidote has an evil twin, the demon daisy, which causes poisoning.