328 results filtered with: Digital Images, Pictures
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A Christmas rose or black hellebore (Helleborus niger): flowering stem. Etching by N. Robert, c. 1660, after himself.
Robert, Nicolas, 1614-1685.Date: [c. 1660]Reference: 24910i- Pictures
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Water dropwort (Oenanthe crocata L.): flowering stem with separate root and floral segments. Coloured engraving after F. von Scheidl, 1776.
Scheidl, Franz Anton von, 1731-1801.Date: [1776]Reference: 18096i- Digital Images
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Eupatorium fortunei
Rowan McOnegal- Digital Images
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Thunbergia alata Sims Acanthaceae. Black-eyed Susan. Tender, perennial herbaceous climbing plant. Distribution: East Africa. Named for Carl Peter (Pehr or Per) Thunberg (1743-1828), doctor, botanist, student of Linnaeus who collected plants in Japan, Sri Lanka and South Africa. He published Flora Japonica (1784)
Dr Henry Oakeley- Pictures
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Buttercup (Ranunculus sp.): flowering and stoloniferous stem with separate fruit and seed. Coloured engraving after F. von Scheidl, 1776.
Scheidl, Franz Anton von, 1731-1801.Date: [1776]Reference: 18003i- Digital Images
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Solanum atropurpureum Schrank Solanaceae. Purple Devil. Purple-spined Nightshade. Herbaceous perennial. Distribution: Brazil. This ferociously spined plant contains tropane alkaloids, atropine, hyoscyamine and scopolamine. All are anticholinergic and block the acetylcholine mediated actions of the parasympathetic nervous system. While the alkaloids are used in medicine and as an antidote to anticholinergic nerve gas poisons, the plant itself is not used in medicine. Its sharp spines can be irritant. Photographed in the Medicinal Garden of the Royal College of Physicians, London.
Dr Henry Oakeley- Digital Images
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Knautia macedonica Griseb. Dipsacaceae. Distribution: Macedonia. This honours the brothers Knaut, both physicians and botanists: Christof Knaut (also Knauth, 1638–94) and his brother Christian Knaut (1654–1716). The plant was traditionally used as a compress in its native Balkans to relieve dermatitis and itching. This use is a local survival of what was once a widespread application of this plant and its relations, and is an example of the doctrine of signatures in which the therapeutic benefit of a plant is suggested by some aspect of its anatomy
Dr Henry Oakeley- Digital Images
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Datura stramonium (Thornapple). Also called Jimsonweed
Sue Snell- Pictures
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A Christmas rose (Helleborus niger), a poppy (Papaver species) and borage (Borago officinalis): flowering stems. Etching by N. Robert, c. 1660, after himself.
Robert, Nicolas, 1614-1685.Date: [c. 1660]Reference: 24913i- Digital Images
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Trillium sessile L. Trilliaceae Distribution: North America. Various Trilliums were used by Native Americans to stop haematuria, haematemesis, menorrhagia, and to heal ulcers (Milspaugh, 1974). Roots were eaten to treat stiff muscles, and tea from the plant drunk and powdered plant put on joints for rheumatism by the Iroquois (Lewis & Elvin-Lewis, 2003). Photographed in the Medicinal Garden of the Royal College of Physicians, London.
Dr Henry Oakeley- Digital Images
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Datura stramonium (Thornapple) Also called Jimsonweed
Sue Snell- Digital Images
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Datura stramonium (Thornapple). Also called Jimsonweed
Sue Snell- Digital Images
- Online
Datura stramonium (Thornapple). Also called Jimsonweed
Sue Snell- Digital Images
- Online
Datura stramonium (Thornapple). Also called Jimsonweed
Sue Snell- Digital Images
- Online
Datura stramonium (Thornapple). Also called Jimsonweed
Rowan McOnegal- Digital Images
- Online
Datura stramonium (Thornapple). Also called Jimsonweed
Sue Snell- Digital Images
- Online
Datura stramonium (Thornapple). Also called Jimsonweed
Sue Snell- Digital Images
- Online
Dianella tasmanica Hook.f. Phormiaceae Tasman flax lily. Distribution: Australia. A pretty plant, but also a source of fine fibre. The leaves are used for making baskets and the berries as a dye source. No medicinal use found, but the fruit is an irritant
Dr Henry Oakeley- Digital Images
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Melilotus officinalis (Common melilot). Also known as Sweet clover
Sue Snell- Pictures
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Stinking hellebore (Helleborus foetidus) with an associated beetle and its anatomical segments. Coloured etching, c. 1831.
Date: 1 July 1831Reference: 24208i- Digital Images
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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)). Photographed in the Medicinal Garden of the Royal College of Physicians, London.
Dr Henry Oakeley- Digital Images
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Phytolacca dodecandra (Pokeroot or Endod)
Rowan McOnegal- Digital Images
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Catharanthus roseus (L.)G.Don Apocynaceae. Madagascar Periwinkle Distribution: Madagascar. It is the source of vincristine and vinblastine, which impair cell multiplication by interfering with microtubule assembly, causing metaphase arrest and are effective medications for leukaemias, lymphomas and some solid tumours. The mortality from childhood leukaemia fell from 100% to 30% once it was introduced - not a drug that could ethically be tested by double-blind trials. These chemicals were initially discovered by investigators in 1958 who were looking for cures for diabetes so tested this plant which was being used in the West Indies to reduce blood sugar levels. There are 70 different alkaloids present in this plant, and some - catharanthine, leurosine sulphate, lochnerine, tetrahydroalstonine, vindoline and vindolinine - lower blood sugar levels. However, the toxicity of this plant is such that this is not a plant to try at home for diabetic management. The vincristine content of the plant is 0.0003%, so two kilograms of leaf are required to produce sufficient vincristine for a single course of treatment for a child (6gm). Fortunately it is a vigorous weed and easy to grow in the tropics. Artificial synthesis has now been achieved. Photographed in the Medicinal Garden of the Royal College of Physicians, London.
Dr Henry Oakeley- Digital Images
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Osmanthus delavayi Franch. Oleaceae Evergreen shrub. Distribution: China. Osmanthus is derived from the Greek for 'fragrant flower', delavayi from its discoverer, the French Missionary with the Missions Étrangères, and plant collector, Pierre Delavay (1834-1895). He sent 200,000 herbarium specimens containing 4000 species including 1,500 new species to Franchet at the Museum of Natural History in Paris. He sent seed of O. delavayi to France (1886), but only one germinated, and all the plants in cultivation until it was recollected 40 years later, arose from this plant (Bretschneider, 1896). The flowers are used to make a tea in China, but the berries (drupes) are not regarded as edible. Photographed in the Medicinal Garden of the Royal College of Physicians, London.
Dr Henry Oakeley- Digital Images
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Serratula tinctoria subsp. seoanei (Willk.)M.Lainz Asteraceae. Saw-wort (in the USA called Dyer's plumeless saw-wort). Distribution: Europe. Named after Dr Victor Lopez Seoane (1832-1900) a Spanish naturalist and physician who was Professor of Physics, Chemistry and Natural History in Corunna. He attained a certain infamy in that three of the subspecies of birds which he published as new discoveries were in leaflets dated 1870 and 1891 but were actually published in 1894, the discovery of which rendered two of his discoveries attributable to others (Ferrer, in Ingenium 7:345-377 (2001). This plant was described by Heinrich Willkomm in 1899 as Serratula seoanei, but M. Lainz, in 1979, decided it was merely a subspecies of Serratula tinctoria, a plant described by Linnaeus (1753). Linnaeus based his description on a plant with a woodcut in Dodoens' Pemptades (1583), saying it had pinnate leaves. However, that woodcut is of two different plants, and when re-used by Gerard (1633) he pointed out that Tabernamontanus (1625) had a woodcut of them and a third plant all with leaves varying from just pinnate to entire. Whatever, the leaves on Serratula tinctorius subsp. seoanei are very distinct, but while pinnate the leaflets are exceedingly narrowly and deeply dissected, Gerard (1633) writes that it is 'wonderfully commended to be most singular [useful] for wounds, ruptures, burstings, and such like...' It is a dye plant, containing luteolin, the same yellow dye as is present in Reseda luteola (source of the dye 'weld'). Seoane also has a viper, Vipera seoanei, named after him
Dr Henry Oakeley