Med Hist. Apr 1, 2005; 49(2): 230–231. 
PMCID: PMC1088232
Book Review
Medicinal plants in folk tradition: an ethnobotany of Britain and Ireland
David E Allen and Gabrielle Hatfield. 
Medicinal plants in folk tradition: an ethnobotany of Britain and Ireland.
Portland, OR, and Cambridge: Timber Press. 2004, pp. 431, illus., £22.50 (hardback 0-88192-638-8).
Medicinal plants in folk tradition: an ethnobotany of Britain and Ireland.
Portland, OR, and Cambridge: Timber Press. 2004, pp. 431, illus., £22.50 (hardback 0-88192-638-8).
Anyone wanting to know the folkloric uses of a British plant would probably consult one of the standard herbals: John Gerard's Herball or Generall historie of plantes (1597), John Parkinson's Theatrum botanicum (1640), Nicholas Culpeper's Complete herbal and English physician enlarged (1681), William Salmon's Botanologia: the English herbal (1710), Elizabeth Blackwell's Curious herbal (1737), William Withering's Botanical arrangement of British plants (1787–92), or Mrs M Grieve's Modern herbal
 (1931), my favourite. But they might be misled, for those herbalists 
generally derived their information from Greek and Latin herbals, such 
as those of Dioscorides and Apuleius Platonicus, ignoring information 
relevant to the British Isles; about a half of the plants included by 
Gerard, for example, are not native to Britain.
For the 
last seventeen years David Allen has been following a different path 
altogether, seeking out information about the uses of herbs in Britain 
and Ireland from purely local sources. And at last, with the help of 
Gabrielle Hatfield, he has produced the work of scholarship that his 
many years of labour promised.
The results confirm two 
views that I have long held: that folkloric medicinal uses of herbs do 
not reflect their true pharmacological properties, except occasionally 
by chance, and that the more indications a plant is said to have the 
less likely it is that any of them is actually beneficial. This does not
 bode well for ethnopharmacologists interested in finding new 
therapeutic uses for plants. For example, we find here ten remedies for 
gout, including Bryonia dioica (white bryony), Sambucus nigra (elder), Tanacetum vulgare (tansy), and Verbena officinalis (vervain), none of which is efficacious, to my knowledge. But Colchicum autumnale,
 the source of colchicine, is listed for measles, jaundice, and the 
procurement of abortion, not gout. Herbs used to treat cancers include Chelidonium majus (greater celandine), Conium maculatum (hemlock), Rumex acetosa (sorrel), and Taraxacum officinale (dandelion), but not Vinca major, which contains powerful anti-cancer drugs. Vinca
 is listed, however, as being useful for cuts and bruises, nosebleeds 
and toothache, hysteria and nightmares, colic and cramp. Don't try it at
 home, is my advice.
Now a pharmacologist, disappointed 
with the effects of these remedies, might not be tempted to investigate 
the list of nearly thirty plants supposedly useful for asthma, including
 Allium ursinum (ramson), Inula helenium (elecampane), and Verbascum thapsus (great mullein). But if so he would miss a gem. For the list includes Datura stramonium
 (thorn apple), the source of an anticholinergic drug that is beneficial
 in asthma. The remedies with real effects often stand out in having 
only one major recognized use. Consider Claviceps purpurea 
(ergot), the rye-infecting fungus that causes smooth muscle contraction.
 It has only one credited action, a tonic effect on the uterus, used, as
 its twentieth-century counterparts were, to procure abortions, to 
induce or speed the progress of labour, and to stop postpartum bleeding.
Occasionally,
 however, a real action is hidden among a gallimaufry of distracting 
indications. Dandelion, for example, or pissabed, is a diuretic, but its
 other uses, mostly in Ireland, are among the most diverse in the book, 
including coughs and colds, jaundice, stomach upsets, rheumatism, cuts 
and sprains, broken bones, thrush, headaches, diabetes, anaemia, and in 
Tipperary “every disease”.
The many 
alternative common names of these plants have been omitted, although to 
be fair this spares us some inordinately long lists. More important is 
the omission of maps showing how the uses of the plants vary from region
 to region, one of the major fascinations of this work. Perhaps there is
 another volume to come—an atlas of British and Irish herbs.
Articles from Medical History are provided here courtesy of Cambridge University Press