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348 results
  • Spore tubes on mushroom (unknown species)
  • Emerald ash borer (Agrilus planipennis Fairmaire) beetle
  • Raw potato
  • Thigh bone (femur) from a female Japanese quail, micro-CT
  • Adipose Tissue
  • Calcium oxalate crystals in urinary sediment
  • Tropaeolum cv
  • Origin of life
  • Corrosion cast of a red deer's lung
  • Silphium perfoliatum L. Asteraceae Indian Cup. Distribution: North America. Austin (2004) records that another species, S. compositum, was used by Native Americans to produce a chewing gum from the dried sap of the roots, and Native American medicinal uses for 'Indian Cup' are probably referrable to S. compositum and not S. perfoliatum. Silphium perfoliatum contains enzymes that inhibit trypsin and chymotrypsin which gives it resistance to fungal, bacterial and insect attacks. Male gall wasps (Antisotrophus rufus) alter the chemistry of the plant to enable them to locate females, making it a 'signpost' plant. The gall wasp lays its eggs in the stem of Silphium laciniatum, to provide food for the larva on emergence, and the galls containing a male or a female wasp will cause the plant to give off a different chemical odour. Emerging male wasps can search for female wasps, which emerge later, by locating this chemical fragrance which acts as a sex pheromone proxy (Tooker et al Proc Natl Acad Sci U S A. 2002 Nov 26
  • Opuntia humifusa Raf. Cactaceae Eastern prickly pear, Indian fig. Distribution: Eastern North America. Stearns (1801) reports 'OPUNTIA a species of cactus. The fruit is called the prickly pear. If eaten it turns the urine and milk in women's breast red'. This is likely to be Opuntia robusta. The ripe fruits are reported edible, raw, and the leaf pads also, either raw or cooked. The fine spines, glochids, cause severe skin irritation so should be wiped off or burnt off prior to cooking and eating. Moerman (1998) reports that O. hemifusa was widely used by Native American tribes for wounds, burns, snakebite, warts (fruit), and as a mordant for dyes used on leather. Widely used, with the spines removed, as a famine food, and dried for winter use. Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Felicia amelloides 'Astrid Thomas'
  • Drosophila leg, tarsus, SEM
  • Healthy adult human head and brain viewed from behind, MRI
  • Agapostemon, anterior view
  • Human hair (Caucasian descent), SEM
  • Charcot Leyden crystals from an endobronchial lesion
  • Thermogram of normal hand
  • Mitchell's equation I
  • Horsefly (unknown species)
  • Chrysogonum virginianum L. Asteraceae. Golden knee. Distribution: Eastern US. No medicinal uses. Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Lung cancer cells treated with nano sized drug carriers
  • Coronilla valentina ssp glauca
  • Chaenomeles x superba 'Issai White'
  • Helianthus annuus L. Asteraceae Sun flower Distribution: Peru to Mexico. The seeds are a source of linoleic acid, a polyunsaturated fat which as part of one's diet is given to reduce coronary artery and cerebrovascular disease, but recently a study has found an increased death rate (BMJ2013
  • Eranthis hyemalis Salisb. Ranunculaceae Winter Aconite Distribution: Europe. The reason it was called Winter aconite and linked to Aconitum napellus as being just as poisonous is because plants were classified according to leaf shape in the 16th century. L'Obel's 'Stirpium adversaria nova' published in 1571 and 'Plantarum seu stirpium historia' published 1576 (with a full page illustration on page 384 showing Eranthis and Aconitum together) along with the knowledge that related plants have similar medical properties caused the belief that Eranthis are as poisonous as Aconitum. They are both in Ranunculaceae and while Eranthis (like all Ranunculaceae) is toxic if eaten, it does not contain the same chemicals as Aconitum. Caesalpino (Ekphrasis, 1616) pointed out the error in classifying according to leaf shape and recommended flower shape. It contains pharmacologically interesting chemicals such as khellin, also present in Ammi visnaga. This is a vasodilator but quite toxic, which can be converted into khellin analogues such as sodium cromoglicate – used as a prophylaxis against asthma attacks – and amiodarone which has anti-arrhythmia actions so is used for atrial fibrillation and other arrhythmias. It is endangered and protected in the wild (Croatia) because of over-collecting for horticulture. Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Banded iron formations (BIFs) contain well developed iron-rich thin alternating layers or laminations as seen here. This formation occurs due to the lack of burrowing species in the Precambrian period in which this sedimentary rock was created. The name comes from the various coloured layers.
  • Hair brain sculptures
  • Punica granatum L. Lythraceae Pomegranate, granatum malum, balustines. Distribution: E. Mediterranean to Himalayas. The Pomegranate is in the centre of the Arms of the Royal College of Physicians, perhaps for its use in cooling, and therefore for fevers. However it was the sour pomegranate that would have been used as Dioscorides says the sweet ones are unfit for use in agues. Culpeper (1650) makes no mention of the fruit, but says of the flowers ‘... they stop fluxes and the Terms in women.’ In the Complete Herbal and English Physician (1826) says the fruit ‘... has the same general qualities as other acid fruits.’ Of the flowers he says (among other properties) that ‘A strong infusion of these cures ulcers in the mouth and throat, and fastens loose teeth.’ Gerard (1633) says that the cravings of pregnant women can be abolished with the juice, and perhaps it was scurvy which was being treated effectively when he reports that the juice was very effective against splitting of blood and for loose teeth. The dwarf form of this species, Punica granatum var. nana with fruits no more than 3cm across. Pomegranate bark can only be sold by registered pharmacies in the UK and used to be used as a vermifuge, with the secondary use that the tincture made from it doubled as a permanent ink. In South Africa the fruit rind is used for diarrhoea and stomach ache, and the bark as a vermifuge, but undesirable side effects make this dangerous. It is reported to be effective against fevers, as a diuretic, to lower blood sugar and to be both antibacterial and antiviral (van Wyk, 2000). Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Primula veris L. Primulaceae Cowslip, Herba paralysis Distribution: W. Asia, Europe. Fuchs ((1542) quotes Dioscorides Pliny and Galen, with numerous uses, from bruises, toothache, as a hair dye, for oedema, inflamed eye, and mixed with honey, wine or vinegar for ulcer and wounds, for scorpion bites, and pain in the sides and chest, and more. Lobel (1576) calls them Primula veriflorae, Phlomides, Primula veris, Verbascula. Lyte (1578) calls them Cowslippe, Petie mulleyn, Verbasculum odoratum, Primula veris, Herbae paralysis and Artheticae. Along with cowslips and oxeslips, he says they are 'used dayly among other pot herbes, but in Physicke there is no great account of them. They are good for the head and synewes ...'. Like other herbals of the 16th and 17th century, the woodcuts leave one in no doubt that Primula veris was being written about. However, other translators of Dioscorides (Gunther, 1959 with Goodyear's 1655 translation