David L. Hoffmann BSc Hons MNIMHArtemisia vulgaris Compositae Collection: The leaves and flowering stalks should be gathered just at blossoming time, which is between July and September. Part Used: Leaves or root. Constituents: Volatile oil, containing linlool, l, 8-cineole...
Verbascum thapsus Scrophulariaceae Names: Aarons Rod, Great Mullein. Habitat: Native to Britain, Europe and parts of Asia. Collection: The leaves are collected in mid-summer before they turn brown, dry in the shade. The flowers are gathered between...
Grindelia spp. Compositae Names: Gum Plant, Gum Weed, Tar Weed. Habitat: The USA and S. America Collection: The aerial parts are collected before the flower buds open. They are dried as soon as possible in the sun. Part Used: Dried aerial parts...
Guaiacum officinale Zygophyllaceae Names: Guaiac, Lignum vitae. Habitat: W. Indies, Florida and S. America. Collection: The resin of the woods exudes naturally and is often collected and used as such, otherwise the heart-wood itself is cut into...
Crataegus oxyacantha & C. monogyna Part used Whilst the berries are the most often used part of this shrub, the flowers and leaves may also have a role to play. Constituents Its constituents highlight the importance of flavones and flavonoids in...
Viola tricolor Violaceae Names: Wild Pansy. Habitat: A common British wild and garden plant. Part Used: Herb. Constituents: Flavonoids, including violanthin, rutin, violaquercitrin. Methylsalicylate Miscellaneous; mucilage gums, resin, saponin...
Humulus lupulus Part Used: Flower inflorescence. Constituents: Volatile oil, composed mainly of humulene (= x-caryophyllene), with b-caryophyllene, myrcene, farnesene, 2-methylbut -3-ene-2-ol, 3-methylbut-2-ene-l-al, 2, 3, 5-trithiahexane and...
Aesculus hippocastanum Hippocastanaceae Names: Do not confuse with its North American relative Aesculusglabra, Buckeye. Habitat: Native to Northern Asia but widely cultivated, common in Britain. Collection: The ripe chestnuts should be gathered as...
Hydrangea arborescens Saxifragaceae Names: Seven Barks, Wild Hydrangea Habitat: USA. Collection: The roots should be unearthed in the autumn. Clean and slice whilst still fresh as they become very hard on drying. Part Used: Dried roots and rhizome...
Hyssopus officinalis Labiatae Habitat: A common garden plant. Part Used: Dried aerial parts. Collection: The flowering tops of Hyssop should be collected in August and dried in the sun. Constituents: Terpenoids; including marrubiin, oleanolic and...
