CALAMUS (Shaun Hately)
Available: Spring, Summer 15%
Climatic Zone: Temperate
Locale: Swamp
Preparation: 1 day
Cost: 5 gp/ 15 gp 
Uses: 1
Ability Check: Intelligence -14
This rush grows in small grassy clumps. It can grow from about 2 to 6 feet in height and has very small yellow green flowers that jut out from the stem. The leaves are long, thin and light green in colour and smells faintly sweet. The root is white with a red brown peel. The root must be peeled and boiled in fresh water within a day of being picked, and should then be drunk by the recipient. Provided no permanent physical damage has been done to the person hearing organs, the herb may restore some small measure of hearing to a totally deaf person, perhaps 10% of normal hearing. In addition the herb has been reported to have aphrodisiac qualities (GMs discretion) and was used by certain Native American peoples to make their dogs fierce.

CALCENA MUSHROOM (Sean Snyder from Joe Devers ‘Lone Wolf’ series)
Available: Always 2%
Climatic Zone: Any
Locale: Underworld
Preparation: 2 week (for potion)
Cost: 100 gp/ 1000 gp (for potion)
Uses: 1
Ability Check: -
Anyone who breathes in the spoors of one of these pink mushrooms incurs a -3 penalty on all saves vs illusions for 2d12 hours. The mushroom may be brewed into a potion by brewing tea and leaving the mushroom to stand in the tea for 2 weeks. The resultant concoction when drunk is a powerful hallucinogen. Anyone under the influence of it will see whatever the GM wants them to see. This effect also lasts 2d12 hours.

CALLIN (Druann Pagliasotti)
Available: Autumn 30%
Climatic Zone: Tropical
Locale: Jungle
Preparation: 1 week
Cost: 5 gp/ 25 gp
Uses: 1
Ability Check: Intelligence -2
A dark nut that grows on the Callin tree in tropical jungles. When the husk is dried, ground and ingested, it thins the blood and strengthens internal organs, helping to prevent heart attacks. (If taken regularly, prevents heart attacks except under extreme duress. Addictive; causes nausea, dizziness and an increased chance of cardiac arrest if quit under unsupervised conditions after repeated use.)

CAT’S TAIL (Shaun Hately from Alexander Scott’s “Maelstrom” RPG)
Available: Summer 75%
Climatic Zone: Temperate
Locale: Forest
Preparation: 1 week
Cost: 1 gp/ 3 gp
Uses: 1
Ability Check: Intelligence -6
Cat’s tail is a small plant with long thin spear shaped leaves rising from its base, and a single long, thin, soft flower at the top of the stalk. This herb when made into a salve, will heal all damage to a person’s heel.

CEPHALOPHAGE (Druann Pagliasotti, from Gene Wolfe’s “Torturer” series.)
Available: Always 5%
Climatic Zone: Temperate
Locale: Special (see below)
Preparation: none (if growing in correct area)
Cost: 100 gp/ 100 gp
Uses: 1
Ability Check: Intelligence -4
A pale, fleshy fungus with a tough, rubbery consistency that is commonly found growing near carnivorous plants. The fungus grows upon corpses, absorbing the cadaver's life memories and personality; up to 10 different minds have been found absorbed by one cephalophage mushroom. Eating cephalophage will transfer those memories and personality quirks to the eater. (Effects last 1d3 hours and while they last the eater can access all of the dead person's mind. After the effects wear off, the eater may still succumb on occasion to “flashbacks” or personality instability; save vs. Intelligence when under intense stress or in a situation liable to cause such flashbacks.) This plant is condemned by some religions as unholy, believed to prevent a soul/spirit from attaining the afterlife. (from Gene Wolfe's Torturer series)

CHAMOMILE (Shaun Hately)
Available: Spring, Summer 30%
Climatic Zone: Temperate
Locale: Rural
Preparation: Negligible
Cost: 2 gp/ 3 gp
Uses: 1
Ability Check: Intelligence -3
This plant can grow up to 2 feet tall, and has a branched stem. It has few leaves, and these are finely divided. The flower heads have yellow centres which are domed in shape with a hollow at their very centre. The petals of this plant bend backwards towards the stem. The flowers from a single plant must be immersed in boiling water and the resultant drink consumed. This drink is very bitter and is normally mixed with honey but this is unnecessary.  The drink will last for approximately 2 months after manufacture, while the leaves can be dried, and will then keep for up to three years. A successful use of this herb will have a calming effect on the consumer.

CHERVIL (Shaun Hately)
Available: Always 10%
Climatic Zone: Temperate
Locale: Forest
Preparation: none
Cost: 10 gp/ 10 gp
Uses: 1
Ability Check: Intelligence -5
Chervil is used to dissolve blood clots, which can help to prevent complications caused by injury. The clots are dissolved within 1d3 turns. 

CINQUEFOIL (Shaun Hately)
Available: Summer 10%
Climatic Zone: Temperate
Locale: Rural
Preparation: 1 hour
Cost: 10 gp/ 15 gp
Uses: 1
Ability Check: Intelligence -5
This plant creeps along the ground on long slender stringlike stalks. It has five or seven part leaves, and small yellow flowers. The stalks must be boiled in white wine or vinegar and then drunk. The herb will then act as an aphrodisiac, and increase the recipients Charisma [Appearance] by 1 for 1d4 hours.

COLEWORT (Shaun Hately from Alexander Scott’s “Maelstrom” RPG)
Available: Spring, Summer 70%
Climatic Zone: Temperate
Locale: Forest
Preparation: none
Cost: 6 sp/ 6 sp
Uses: 1
Ability Check: Intelligence -4
Colewort is a small plant with a single large glossy leaf, and small white flowers with four petals. Anyone who chews on the flowers before drinking will remain sober for the entire evening. Its effects protect only against alcohol, and not against any other drug or toxin.

COLTSFOOT (Shaun Hately)
Available: Spring, Summer 25%
Climatic Zone: Temperate
Locale: Mountains
Preparation: 1 hour
Cost: 2 gp/ 4 gp
Uses: 1
Ability Check: Intelligence -5
The plant has a single golden yellow flower borne at the top of a six inch tall stem with long pinkish woolly scales. These flowers are crushed and mixed with honey, and applied as a poultice to infected wounds in a effort to draw out the infection. It does not cure any damage.

COMFREY (Shaun Hately)
Available: Spring 50%
Climatic Zone: Temperate
Locale: Rural
Preparation: 1 day
Cost: 4 gp/ 10 gp
Uses: 1
Ability Check: Intelligence -5
Comfrey grows to a height of up to 3 feet. It has stiff, angular and hollow stalks which are covered with rough hairs. It has pink, mauve white or cream flowers. Its thick black root is the portion used in Herbalism. It should be boiled and wrapped in a poultice which is then wrapped around a broken limb and increases the speed of healing by fifty percent. It can also be used in a bath by women in order to give the impression that they are virgins on their wedding nights.  

COW PARSNIP (Shaun Hately from Alexander Scott’s “Maelstrom” RPG)
Available: Always 45%
Climatic Zone: Temperate
Locale: Forest
Preparation: 6 weeks
Cost: 3 gp/ 10 gp
Uses: 7
Ability Check: Intelligence -6
Cow parsnip has small leaves covered with tiny hairs. These hairs must be made into a salve. Cow parsnip will cure madness for a short period (a few hours). Repeated application over a two week period may (GMs discretion) cure insanity altogether.

COW-WHEAT (Shaun Hately from Alexander Scott’s “Maelstrom” RPG)
Available: Summer 50%
Climatic Zone: Temperate
Locale: Grassland
Preparation: 1 week
Cost: 2 gp/ 3 gp
Uses: 2
Ability Check: Intelligence
Cow wheat is a small straight stemmed yellow-green plant. Its pale yellow flowers produce a white powder when crushed, between two hands. If this powder is placed into food or drink it will cause a person to act as if drunk. For those who desire game mechanics to deal with drunkenness, please consult the Intoxication Table in the 1st Edition AD&D DMG, page 82. Each dose of this herb successfully administered will increase the level of drunkenness by one step.

CULKAS (Shaun Hately from ICEs “MERP” RPG)
Available: Always 40%
Locale: Desert
Climatic Zone: Tropical
Preparation: none
Cost: 35 gp/ 35 gp
Uses: 10
Ability Check: Intelligence 
Each application of Culkas will cure one square foot of sunburn.