Text for photos (C) Henry Oakeley, Sept 2013 for the Wellcome Image library



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Text for photos (C) Henry Oakeley, Sept 2013 for the Wellcome Image library


Abelia x grandiflora R.Br. Caprifoliaceae. Distribution (A. chinensis R.Br. × A. uniflora R.Br.). Mexico, Himalayas to Eastern Asia. Ornamental flowering shrub. The name celebrates the short life of Dr Clarke Abel FRS (1789-1826), one of the first European botanists to collect in China, which he did when attached as physician to the Canton embassy in 1816-17. It has no medicinal uses but is a popular ornamental shrub in the honeysuckle family because it attracts butterflies and has a long flowering period. From June to October it produces a profusion of small, fragrant, pink-flushed, white flowers on long, arching branches.


Acacia karroo Hayne – Sweet-thorn; Karoo thorn. Small tree. Distribution Southern Angola, east to Mozambique, south to South Africa. This tree is festooned with fearsome thorns, and, just before the rainy season starts, it produces poisonous sap; the slightest graze from a thorn at this time causes swelling and pain for several days. The bush people of the northeast district of Namibia use its sap in an arrow poison, adding it to the larva of Diamphidia – which is also poisonous. Its active ingredients are cyanogenic glycosides – which produce cyanide on hydrolysis. The bark contains tannins, which have been implicated in carcinogenesis. Acacia karoo produces Cape Gum, which is used in pharmaceutical preparations and to treat diarrhoea. Used to make rope from the bark, gum to make candy, fodder for animals, charcoal.


Acacia melanoxylon R.Br. Mimosaceae. Australian Blackwood. Tree. Distribution: Eastern Australia. Tree. Invasive weed in South Africa, Portugal, California. Local uses: analgesic. Causes allergic contact dermatitis due to 2,6,-dimethoxybenzoquinone. Pinnate leaves of young plant drop off and phylloclades are formed instead.


Acanthus dioscoridis L. Acanthaceae. Distribution: Iran, Iraq, southern Turkey. Herbaceous perennial flowering plant. Named for Pedanius Dioscorides of Anazarbus, 1st century Greek physician and herbalist whose book, De Materia Medica, was the main source of herbal medicinal information for the next 1,600 years. He describes some 500 plants and their medicinal properties. His manuscript was copied and annotated over the centuries, and the earliest Greek text in existence is the illustrated Juliana Anicia Codex dated 512CE (Beck, 2005). The first English translation was made around 1650 by John Goodyear and published by Robert T. Gunther in 1934; the latest translation being by Beck, who we quote here. Dioscorides is particularly interesting in that many of his names were adopted by Linnaeus in the establishment of the current binomial system of nomenclature in 1753, and he grouped plants by their ‘medicinal’ properties, which put them close to modern plant family groupings.


Acanthus spinosus L. Acanthaceae. Bears breeches. Distribution: Southern Europe to Western Turkey. Herbaceous perennial flowering plant. Named for spiny leaves. Dioscorides recommended the roots applied for inflammation and spasms, and -when drunk- to promote urine, check diarrhoea, and for phthysis, ruptures and convulsions. The leaves are the model for those at the top of Corinthian columns. Tetraglycosides isolated from the plant show cytotoxicity in sea urchin eggs and crown gall tumour on potato disks.


Acer japonicum Thunb. Sapindaceae. Japanese maple. Small tree. Distribution: Japan, North Korea. Can be tapped in early spring for its sugar-rich sap although it is not as abundant as in Acer saccharum.


Acer palmatum Thunb. Sapindaceae. Japanese maple. Small tree. Distribution: Japan, North Korea. The cultivar 'Bloodgood' has red leaves. Used to induce tranquility in Japanese temple gardens. Can be tapped in early spring for its sugar-rich sap although it is not as abundant as in Acer saccharum.


Achillea millefolium L. Asteraceae. Yarrow or sneezewort, the latter because ground up it made a snuff to induce sneezing. Evergreen, herbaceous perennial. Distribution: Europe, Asia and North America. Dioscorides calls it Achilles’ woundwort, sideritis, writing that the ground-up foliage closes bleeding wounds, relieves inflammation and stops uterine bleeding. Gerard (1633) says that put up one’s nose it causes a nosebleed and so stops migraines. Named for the Greek warrior, Achilles, who used this plant for healing wounds – having been taught its properties by his teacher, Chiron the centaur. Millefolium because of the thousands of fronds that make up the leaf, and which, when applied to a bleeding wound, facilitate coagulation by platelets.


Acinos alpinus (L.) Moench. Lamiaceae. Rock thyme. Small herbaceous perennial. Distribution: C. and S. Europe. This is Mountain wild Basil, Clinopodium alpinum, of Parkinson (1640), the Teucrium Alpinum and Clinopodium Alpinum hirsutum of Bauhin. Then as now, when it has the synonyms Thymus alpinus, Satureja alpina and Calamintha alpina, its nomenclature has been confused. It is unlikely to be the Acinos or Clinopodium of Theophrastus or Dioscorides. Dioscorides gives opposing medicinal uses to the plants he knows by these two names, and Parkinson (1640) makes no judgement as to its uses. Reportedly drunk as a tea in Greece, but evidence for it being used historically for fevers is lacking.


Aconitum carmichaelii Debeaux. Ranunculaceae. Chinese aconite, Chinese wolfsbane, Carmichael's monkshood. Herbaceous perennial. Distribution C. to W. China to N. America. Named for Dr J.R. Carmichael (d. 1877), English physician, plant collector and Protestant missionary from 1862-1877 in Guangdong and Shandong, China initially in Canton. He aided Francis Forbes to collect plants for Kew. Aconitum plants are so poisonous that Theophrastus states that death was the punishment for possessing them. Aconitine is the poison and was used - from Aconitum ferox - in the 'curry murder' in London in 2009. It causes respiratory paralysis, bradycardia (slowing of the pulse), cardiac arrhythmias, tingling, sweating, gastric cramps, diarrhoea and death, both by ingestion and by absorption through the mucous membranes and the skin. Despite this it is widely used in Chinese herbal medicine. It is a restricted herbal medicine which can only be dispensed by a herbal practitioner for external use following a one-to-one consultation, or by prescription from a registered doctor or dentist (UK Medicines and Healthcare Products Regulatory Agency (MHRA)).


Acorus gramineus Aiton, Acoraceae. Japanese sweet flag; grassy-leaved sweet flag. Rhizomatous perennial. Distribution: E. Himalaya to Japan and Philippines. The cultivar 'Oborozuki' has yellow leaves with green stripes. The rhizomes are aromatic. The European Acorus calumus is used to make a volatile oil which contains β-asarone as the major component. This is carcinogenic in animal studies and nephrotoxic and epileptogenic. Acorus gramineus is used medicinally throughout Asia and In the Philippines it has the same multiplicity of uses as A. calamus, including treatment of arthritis, lumbago, muscle pains, indigestion; toothache, as a tonic, to increase the appetite, haemorrhage, treat intestinal ulceration, used as a sedative, for tinnitus, deafness, poor memory, unconsciousness during a fever, for treating insanity, as an insecticide abscesses and scabies and to protect young children from getting flatus when someone compliments them on their appearance – a condition known as ‘usog’.


Adiantum venustum D.Don Adiantaceae (although placed by some in Pteridaceae). Himalayan maidenhair fern. Small evergreen hardy fern. Distribution: Afghanistan-India. It gains its vernacular name from the wiry black stems that resemble hairs. Adiantum comes from the Greek for 'dry' as the leaflets remain permanently dry. The Cherokee used A. pedatum to make their hair shiny. Henry Lyte (1576), writing on A. capillus-veneris, notes that it restores hair, is an antidote to the bites of mad dogs and venemous beasts; helpeth shortness of breath and excess phlegm; treats kidney stones, periods, helps deliver the placenta, and more. Linnaeus (1782) recommended it for intestinal obstruction.


Adonis vernalis L. Ranunculaceae. Pheasant's eye, the golden flowered spring (or vernal) Adonis, is named in memory of Adonis, the Greek god of plants, who disappeared into the earth in the winter and reappeared in the spring. The flowers were said to have sprung from his blood when he was gored to death by a wild boar, but this plant must have been the blood red Adonis aestivalis, the summer Adonis. Distribution: Eurasia to Spain and Sweden. Gerard (1633) recommends it for renal stone and intestinal colic. Lewis & Elvin Lewis (2003) note it is poisonous, containing cardiac glycosides (adonitoxin, cymarin, K-strophanthin) and flavenoids. The UK Medicines and Healthcare Products Regulatory Agency (MHRA)) bans its use for ingestion 'no dose permitted' but allow it to be prescribed by a herbal practitioner on a one-to-one consultation.


Aeonium undulatum. Webb & Berthel. Crassulaceae. Tree House Leek; saucer plant. Tender succulent. Distribution: Canary Islands. The genus name possibly derives from the Greek for 'ageless'. The mucilage in the leaves is used for treating burns. Not described until 1840,


Agapanthus L'Her. Amaryllidaceae. African Lily. Bulbous plant. Distribution: South Africa. 'Streamline' is a hybrid cultivar of unknown parentage. The roots of Agapanthus africanus are used (in South African 'muthi' medicine) in a decoction for treatment of women in labour and after birth. It is believed to relieve difficult labour and to help the expelling of the placenta. The active chemicals are thought to be saponins and those in Agapanthus have uterotonic activity in crude decoctions (van Wyck, 2000).


Agrimonia eupatoria L. Agrimony, Eupatorium, Maudlein. Perennial herb. The species name comes from king Mithridates Eupator VI of Pontus (132-63 BC) who took regular doses of poison to develop an immunity to them. A 'Mithridate' was a medicine against poisons. Distribution: N. and S. Africa, N. Asia, Europe. '…provokes urine and the terms [periods], dries the brain, opens stoppings, helps the green sickness [iron deficiency anaemia], and profits such as have a cold weak liver; outwardly applied it takes away the hardness of the matrix [=uterus] and fills hollow ulcers with flesh' (Culpeper, 1650). Dioscorides (Beck, 2005) recommends mashed leaves in hog's grease for healing scarring ulcers, and the seed in wine for dysentery and serpent bites. Goodyear's 1655 translation of Dioscorides (Gunther 2000) has this as cannabis, which Parkinson (1640) says is in error and summarises the manifold uses from classical authors, from removing splinters to stopping menorrhagia.


Ajuga reptans L. Lamiaceae. Bugle, Bugula vulgaris. Perennial herb. The meaning of 'Ajuga' is obscure', 'reptans' refers to its creeping habit. 'Pink Elf' is a pink flowered cultivar. Distribution: Europe. Culpeper (1650) writes ',,, ... excellent for falls or inward bruises, for it dissolves congealed blood, profitable for inward wounds, helps the rickets and other stoppings of the Liver, outwardly it is of wonderful force in curing wounds and ulcers, though festered, as also gangrenes and fistulas, it helps broken bones and dislocations. To conclude, let my countrymen esteem it as a Jewel...'. Parkinson (1640) documents the historic confusion with Consolida, Symphytum, Prunella, Laurentina, etc.


Albizia julibrissin Durazz. Fabaceae. Persian silk tree. Called 'shabkhosb' in Persian, meaning 'sleeping tree' as the pinnate leaves close up at night. Tropical tree. Named for Filippo degli Albizzi, an Italian naturalist, who brought seeds from Constantinople to Florence in 1749, and introduced it to European horticulture. The specific epithet comes from the Persian 'gul-i abrisham' which means "silk flower". Distribution: South Africa to Ethiopia, Senegal, Madagascar, Asia. Bark is poisonous and emetic and antihelminthic. Various preparations are widely used for numerous conditions and the oxitocic albitocin is abortifacient. However, studies on the seeds and bark of other Albizia species in Africa, demonstrate it is highly toxic, half a kilogram of seeds given to a quarter ton bull, killed it in two hours (Neuwinger, 1996). A useful tree for controlling soil erosion, producing shade in coffee plantations, and as a decorative shade tree in gardens.


Albizia julibrissin Durazz. Fabaceae. Persian silk tree. Called 'shabkhosb' in Persian, meaning 'sleeping tree' as the pinnate leaves close up at night. Tropical tree. Named for Filippo degli Albizzi, an Italian naturalist, who brought seeds from Constantinople to Florence in 1749, and introduced it to European horticulture. The specific epithet comes from the Persian 'gul-i abrisham' which means "silk flower". Distribution: South Africa to Ethiopia, Senegal, Madagascar, Asia. Bark is poisonous and emetic and antihelminthic. Various preparations are widely used for numerous conditions and the oxitocic albitocin is abortifacient. However, studies on the seeds and bark of other Albizia species in Africa, demonstrate it is highly toxic, half a kilogram of seeds given to a quarter ton bull, killed it in two hours (Neuwinger, 1996). A useful tree for controlling soil erosion, producing shade in coffee plantations, and as a decorative shade tree in gardens.


Alcea rosea L., Malvaceae. Hollyhock. First called holyoke by Turner (1548). Cultivar 'Nigra' refers to its dark red coloured flowers. Distribution: Southwest China, but now a world-wide garden plant. Early medicinal uses are difficult to find as it was confused with mallow (Malva, Lavatera), Marsh Mallow (Althea), hibiscus (Hibiscus), and abutilon (Abutilon) but Parkinson (1640) says the leaves of Hollihocke were, at one time, eaten, raw or boiled, as a purgative. Bentley (1861) says that it is used, like Malva, to make marsh-mallows; that a blue dye is obtained from the leaves, and ropes can be made from the fibres of the outer part of the stem.


Alcea rosea L., Malvaceae. Hollyhock. First called holyoke by Turner (1548). Cultivar 'Nigra' refers to its dark red coloured flowers. Distribution: Southwest China, but now a world-wide garden plant. Early medicinal uses are difficult to find as it was confused with mallow (Malva, Lavatera), Marsh Mallow (Althea), hibiscus (Hibiscus), and abutilon (Abutilon) but Parkinson (1640) says the leaves of Hollihocke were, at one time, eaten, raw or boiled, as a purgative. Bentley (1861) says that it is used, like Malva, to make marsh-mallows; that a blue dye is obtained from the leaves, and ropes can be made from the fibres of the outer part of the stem


Allium moly L., Alliaceae. Golden garlic. Bulbous herb. Distribution: Southwest Europe and Northwest Africa. This is not the 'moly' of Homer's Odyssey Book 10 lines 302-6 which describes Mercury giving Ulysses 'Moly', the antidote to protect himself against Circe's poison '"... The root was black, while the flower was as white as milk; the gods call it Moly, and mortal men cannot uproot it, but the gods can do whatever they like. ' i.e. wrong colour, Allium moly has yellow flowers, and - according to Parkinson (1629) has white roots. The 'Moly' of Dioscorides is 'four cubits' (two metres) high, with white flowers (Beck, 2005). Allium moly might grow to 50cm. It is poisonous.


Allium schoenoprasum L. Alliaceae. Chives. Bulbous perennial herb. 'schoenoprasm' means 'rush leek' in Greek, referring to the narrow leaves. Distribution: Asia, Europe and North America. Leaves used as a garnish on cooked food and in salads. However like others in Boraginaceae it contains the pyrollizidine alkaloid cynoglossine which causes liver damage.


Althaea officinalis L. Malvaceae. Marsh Mallow. Herbaceous perennial. Althaea comes from the Greek word for healing; officinalis indicates that it was used in the 'offices' - the clinics - of the monks in medieval times. Distribution: Africa. The mucilage from the roots was made into confectionary called marshmallow, but no longer. It is now made of sugars, corn syrup and gelatin with various flavourings. Dioscorides (Beck, 2003) recommends it for injuries, parotid tumours, scrofula, mastitis, uterine disorders, urinary problems, painful hips, dysentery, shakes, ruptures, toothache, vitiligo, dysentery, haemoptysis, bites and burns.


Althaea officinalis L. Malvaceae. Marsh Mallow. Herbaceous perennial. Althaea comes from the Greek word for healing; officinalis indicates that it was used in the 'offices' - the clinics - of the monks in medieval times. Distribution: Africa. The mucilage from the roots was made into confectionary called marshmallow, but no longer. It is now made of sugars, corn syrup and gelatin with various flavourings. Dioscorides (Beck, 2003) recommends it for injuries, parotid tumours, scrofula, mastitis, uterine disorders, urinary problems, painful hips, dysentery, shakes, ruptures, toothache, vitiligo, dysentery, haemoptysis, bites and burns.


Amaranthus L. Amaranthoideae. Amaranth. Herbaceous perennial. Genus name means 'unfading' in reference to the durability of the colour in the flowers. 'Red Velvet' is a garden cultivar. Various species are used in Brazil 'to increase lactation'. Matthiolus (1569) in his commentary, unsurprisingly in view of its red flowers (the word 'flowers' is a synonym for menses), recommends Amaranthus for stopping heavy periods and leucorrhoea, as well as for coughing up blood and dysentery.


Anchusa azurea Mill. Boraginaceae. Italian bugloss. Herbaceous perennial. 'Loddon Royalist' is a cultivar which has the Award of Garden Merit from the Royal Horticultural Society. Distribution: North Africa, E. Asia, Europe. Contains the pyrrolizidine alkaloid cynoglossine which causes liver damage. Anchusa officinalis is a banned substance for herbal medicine in Australia, it is not licensed for the manufacture of herbal medicine in the UK but recommended, with cautions, by herbalists for coughs and other conditions.


Anemone blanda Schott & Kotschy, Ranunculaceae. Grecian windflower. Genus name may derive from Greek for wind, blanda being Latin for mild or pleasing. Perennial tuberous herb. Distribution SE Europe, Turkey, Lebanon, Syria. Not described until 1854 so no early herbal records under this name. However all species of Ranunculaceae are poisonous, containing protoanemonin, which causes blistering if sap gets on the skin and indigestion if ingested.


Anthyllis vulneraria L. Fabaceae. Kidney vetch, woundwort. 'vulneraria' means 'wound healer'; 'wort' has been used in England since the 9th century to mean root or plant. Parkinson (1640) notes Anthylis prior and Anthyllis lentisimilis (Dodoens); Anthyllis leguminosa (Lobel, Clusius); Lagopodium (Tabermontanus); Arthetica wundkraut Saxonum (Thalius); Vulneraria rustica (Gesner); and several more names from different authors. Small herb. Distribution: Europe to Iran and North Africa. The hairy flowers and leaves would act, like cotton wool, to promote platelet clotting. Parkinson (1640) notes it as Anthyllis leguminosa vulgaris writing ' ... much use among the Germans for their wonds and hurts, inward and outward, so doe both wayes apply them, whence their name. Thalius [said] it was used for the gout' . Anthyllis vulneraria is being used to clear up contaminated mine sites as it can absorb zinc, lead and cadmium from mine tailings where the metal concentrations are 500 times higher than European standards allow, storing up to 8% by weight in vacuoles in their leaves. It has no modern medical use.


Aralia spinosa L. Araliaceae. Devil's walking stick, Prickly ash, Hercules' club. Tree. Distribution: Eastern North America. Contact with sap causes skin irritation, raw berries mildly toxic to humans, causing diarrhoea and vomiting. Eaten by bears. Used medicinally by Native Americans for a variety of conditions.


Araneus diadematus Clerk, Araneidae. Orb web Spider, European garden spider. Distribution: Europe and North America. Bite is unpleasant but not dangerous. Spiders’ webs have been used to stop bleeding from wounds (Stearns, 1801). They probably work by providing a framework for platelets to coagulate.


Arctium lappa L. Asteraceae. Greater Burdock. Distribution: Europe to India and Japan. Dioscorides (Beck, 2003) writes: '... helps those who spit blood and who suffer from abscesses ... plastered on it stems the pains around the joints that stem from twistings. The Leaves are applied beneficially on old ulcers.' Culpeper (1650) writes: ‘Burdanae, etc. Of Bur, Clot-Bur or Burdock, ... helps such as spit blood and matter, bruised and mixed salt and applied to the place, helpeth the bitings of mad dogs. It expels wind, easeth pains of the teeth, strengthens the back, helps the running of the reins, and the whites in women, being taken inwardly.’ The roots contain inulin, which is made into a non-digestible sweetener for diabetics. It has a multitude of uses in herbal medicine, in particular it is a component of a compound called ‘essiac’ that has been widely used as a treatment of cancers in the USA, but which is of no proven benefit. The young roots can be eaten raw or cooked. The seeds are hairy and care should be taken when harvesting them as inhaled they are reported as ‘toxic’. The root is licensed for use in Traditional Herbal Medicines in the UK (UK Medicines and Healthcare Products Regulatory Agency (MHRA)).




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