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348 results filtered with: Yellow
  • Paeonia suffruticosa 'Bai Yu'
  • Nutty brain, artwork
  • 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
  • Dividing HeLa cells, LM
  • Raynaud's Phenomenon
  • Misreplication of DNA in human fibroblast nucleus
  • Vessels
  • Pulsatilla vulgaris Mill. Ranunculaceae Distribution: Europe. Lindley (1838) and Woodville (1790) knew this as Anemone pulsatilla, the common name being Pasque (Easter) Flower. At the end of the 18th century it was recommended for blindness, cataracts, syphilis, strokes and much more, treatments which, as was clear to physicians at the time, were valueless. Gerard (1633) writes: ‘They serve only for the adorning of gardens and garlands, being floures of great beauty’. It is in the buttercup family, Ranunculaceae, all members of which are poisonous. It was recommended, by mouth, for ‘obstinate case of taenia’ (tapeworms). One hopes it was more toxic to the worm than the patient. Flowers with a central disc and radiating florets were regarded as being good for eye complaints under the Doctrine of Signatures. Porta (1588) writes (translated): ‘Argemone [Papaver argemone], and anemone, have flowers of this shape, from this they cure ulcers and cloudiness of the cornea’. There were occupational diseases even before there were words like pneumoconiosis, and Lindley writes that ‘the powder of the root causes itching of the eyes, colic and vomiting, if in pulverising it the operator do not avoid the fine dust which is driven up.’ Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Raynaud's Phenomenon
  • Bee (Anthophora)
  • 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 (1571) and Plantarum seu stirpium historia (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, but 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.
  • Raw ginger, SEM
  • ATP sysnthase fields
  • Multi-sized beads, fluorescence
  • 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)
  • Collagen fibres in human skin, LM
  • Origin of life
  • Rabbit cerebellum
  • Rapacious parasitoid (Dryinus bruneianus)
  • HeLa cell, immortal human epithelial cancer cell line, SEM
  • Thermogram of an infected middle finger, left hand.
  • HIV transcription, HIV viral life cycle, illustration
  • Swallowtail butterfly (Papilio)
  • Argemone mexicana L. Papaveraceae. Mexican poppy
  • 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.
  • Yellow lichen in yew tree
  • Hair brain sculpture
  • Yellow Jacket Wasp, anterior view
  • Hair brain sculpture
  • Cytisus scoparius (L.) Link Fabaceae. Common broom, Genista. Distribution: Western and central Europe. Culpeper (1650) writes: 'Genista. Broom: … clense and open the stomach, break the stone in the reins [kidneys] and bladder, help the green sickness [anaemia]. Let such as are troubled with heart qualms or faintings, forbear it, for it weakens the heart and spirit vital' and in respect of the flowers he writes: 'Broome-flowers, purge water, and are good in dropsies [now regarded as heart failure with fluid retention].' Photographed in the Medicinal Garden of the Royal College of Physicians, London.