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12 results
  • Lettuce leaf stomata
  • Danae racemosa (L.) Moench Asparagaceae. Alexandrian or Poet's laurel. Distribution: Turkey to Iran. A monotypic genus with supreme adaptation to dry conditions, bearing its flowers and fruits on phylloclades, leaf like expanded stems. The phylloclades are too thick for sunlight to pass through so have chlorophyll containing cells on both sides (the cells in the middle do not) and stomata on both sides to facilitate CO2 diffusion into the plant. Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Feverfew stoma
  • Hairs on a leaf surface
  • Buddleia (Buddleja davidii) leaf
  • Stoma and chloroplasts of maize leaf
  • Rust on rose leaf
  • Surface of a mint leaf
  • Open stoma on an orchid leaf (Phalaenopsis sp.)
  • Open stoma on an orchid leaf (Phalaenopsis sp.)
  • Cell division and gene expression in plant cells
  • Ruscus aculeatus L. Ruscaceae Butchers Broom., Box holly, Knee Holly, Jew’s myrtle. Distribution: Mediterranean to Britain. Aculeatus means 'prickly' which describes the plant well. Dioscorides in 70 AD (Gunther, 1959) says of this plant ‘... ye leaves and berries drunk in wine have ye force to move urine, expel the menstrua, and to break ye stones in ye bladder ...’ and adds also ‘ ... it cures also ye Icterus and ye strangurie and ye headache.' Its use did not change for a millennium and a half