Tansy

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Tansy
Scientific name:    Tanacetum vulgare[204]
Description:    The tansy plant has round, yellow leaves, and has a very sweet and strong scent, making it good for disguising a cat's scent.[205]
Location:    Can be found near Twolegplaces,[206] and also grows just outside the medicine den in the SkyClan Camp[75]
Usage:    To be consumed, but only in small doses.[198]
Effect:    Cures coughs.[207] Can be used to cure wounds and poisons.[208] Stops cats from getting greencough.[209] Soothes throats.[210] Can be extremely dangerous to pregnant cats.[211]
Tormentil

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Tormentil
Scientific name:    Potentilla erecta [212]
Description:    It has a strong, aromatic scent to it and a sharp taste.[source?]
Location:    Found in most cool or cold areas, but other types may be found in gardens.[source?]
Usage:    Chewed and put on the wound.[208]
Effect:    Its root is good for treating all wounds and extracting poison.[208]
It is used by the Tribe of Rushing Water, and is mentioned by Stoneteller to Jaypaw when he is taking care of Gray.[213]
Thyme

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Thyme
Scientific name:    Thymus vulgaris [214]
Description:    Small, delicate, thick, sticky leaves with a fresh tang.[215]
Location:    Best in hot, sunny locations.
Usage:    Leaves can be chewed on.[216]
Effect:    Calms nervousness, anxiety, and cats who are in shock.[198]
In Moonrise, Mothwing gives Leafpaw and Sorreltail thyme to calm their anxiety after being chased by a WindClan patrol.[217]