Aconitum. Aconite. The fresh leaves and flowering tops of Aconitum napellus, Monkshood; Lin. Syst., Polyandria trigynia. Gathered when about one-third of the flowers are expanded, from plants cultivated in Britain. [Aconiti Folium. Aconite Leaf. The leaves of Aconitum napellus. U. S.]

Aconiti Radix. Aconite Root. The root, dried, of Aconitum napellus, importedfrom Germany or cultivated in Britain; and collected in winter or early spring, before the leaves have appeared.