Cantharis n. : A beetle (Lytta, / Cantharis, vesicatoria), havin1g an elongated cylindrical body of a brilliant green color, and a nauseous odor; the blister fly or blister beetle, of the apothecary; -- also called Spanish fly. Many other species of Lytta, used for the same purpose, take the same name. See Blister beetle, under Blister. The plural form in usually applied to the dried insects used in medicine.

Example:
Cantharis as a homeopathic remedy for sunburn...?

Taxonomy
Cantharis fusca, homeopathic remedies, Spanish fly, burning pain, symptom, blister beetle, homeopathic, beetle, cantharidin, pain, used to treat, inflammation, Lytta vesicatoria, blisters, Burns, southern Europe, cantharides, feel better.

Defination from the web:
cantharis n. , pl. , cantharides . In both senses also called Spanish fly . A brilliant green blister beetle (Lytta vesicatoria or Cantharis ... Because cantharis is a member of the animal kingdom, its activity excites the passions of animals. ...