(From Arnica Montana 1186 a lamb,) so called from the likeness of its leaves to the coat of a lamb. German leopard's bane; called also do-ronicum, alisma, doronicum plantaginis folio, caltha al-fiina, acyrus; panacea lapsorum. It is the arnica mon-tana Lin. Sp. Pi. 1245. Nat. ord. Compositae discoideae Corymbyferae of Jussieu. Roots and flowers. This plant grows particularly in Germany, and flowers throughout the summer. The leaves and flowers have a sharp, aromatic, bitterish, taste; and, when bruised, their odour provokes sneezing. Water and rectified spirit extract their virtues by infusion, and retain them, in distillation. The roots are more aromatic, though their active matter is somewhat less volatile. Ber-gius considers this plant as emetic, errhine, diuretic, diaphoretic, and emmenagogue. From its supposed power of attenuating the blood, it has been esteemed peculiarly efficacious in obviating the bad consequences occasioned by falls and bruises, and hence acquired the title of panacea lapsorum. Dr. Colin has written a work on this subject, De Arnica in Febribus, et allis Morbis Putridis; in which he highly extols its febrifuge and antiseptic virtue. Dr. Bruckner recommends a decoction of the arnica in fevers attended with haemorrhages, efflorescences, etc. Lewis and Neuman speak highly of its power. In fevers of the putrid and intermittent kind, both the flowers made into an electuary and their watery extract have been successful. In putridity and debility, malignant dysenteries, rheumatism, gangrene, palsy, and gutta serena, it is said to have manifested considerable efficacy. Nine drachms of the flowers powdered and mixed with a proper quantity of honey into an electuary, is the dose to be taken in two days. Or one ounce of the flowers infused in a sufficient quantity of boiling water for half an hour, and afterwards, in a vessel closely stopped, boiled for a quarter of an hour. Of this decoction two ounces were taken every two hours. Or, two ounces of the root in powder were digested with thirty ounces of water in a phial closely stopped, and placed deep in a sand bath, for twelve hours, and this sweetened with syrup of marshmallows, of which two or three ounces were taken every two or three hours. The root, given from five to ten grains, is said to be useful in diarrhoeas and dysenteries, in gangrenes, quartans, and typhi. Externally it is applied to foul ulcers and gangrenes. It is much extolled in Germany, though not much used in England; however, it certainly merits attention. The flowers of the inula dysenterica, anthemis tinctoria, hypocaeris radicata, and other flosculous flowers, greatly resemble, and may be mistaken for those of the arnica.