Thuja occidentalis Cupressaceae Names: Thuja Collection: The twigs of this evergreen conifer can be gathered all year round, but are best during the summer. Part Used: Young twigs Constituents: l% Volatile oil including thujone; flavonoid glycoside;...
Prunus serotina Rosaceae Names: Virginia Prune Bark. Habitat: Widely distributed throughout Canada and the USA. Collection: The bark is gathered from young plants in the autumn, when it is most active. The outer bark is stripped off and the inner...
Drosera rotundifolia Droseraceae Habitat: Grows throughout Europe on wet heaths, moors and sphagnum bogs, especially in Wales. Collection: The whole of the plant is gathered during the flowering period in July or August. Part Used: Entire plant...
Viola odorata Violaceae Names: Violet. Habitat: Widely found in Europe and Asia. Collection: The leaves and flowers are gathered in the spring, in March and April. Dry with care. Part Used: Leaves and flowers. Constituents: Phenolic glycosides...
Trifolium pratense Papilionaceae Habitat: Widely distributed throughout Europe including Britain, naturalized in N. America and many other parts of the world. Collection: The flowerheads are gathered between May and September. Part Used: Flowerheads...
Asclepias tuberosa Asclepiadaceae Names: Butterfly Weed. Habitat: USA Collection: The rhizome should be unearthed in March or April. Clean,split and dry. Part Used: Rhizome. Constituents: * Cardenolides, including asclepiadin * Flavonoids; rutin...
Cephaëlis ipecacuanha Rubiaceae Folk names: Ipecac, Rio, Matto Grosso. Habitat: Native to tropical South America, including Brazil, and cultivatedin southern Asia. Part used: Root and rhizome. Collection: The root of this small South American shrub...
Lobelia inflata Campanulaceae Common name: Pukeweed, Indian tobacco. Habitat: Eastern USA, cultivated elsewhere. Part used: Aerial parts. Collection: The entire plant above ground should be collected at the end of the flowering time, between August...
Pulmonaria officinalis Boraginaceae Habitat: Shady places throughout Europe including Britain, cultivated in gardens. Part used: Leaves. Collection: The leavres should be gathered during and after flowering, between March and September...
Althaea officinalis Part Used: Root and leaf. Constituents: In the root: Mucilage, l8-35% Miscellaneous; about 35% pectin, l-2% asparagine, tannins. In the leaves: Mucilage; including a low molecular weight D-glucan Flavanoids such a kaempferol...
David L. Hoffmann BSc Hons MNIMH