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  • Purple loosestrife (Lythrum salicaria L.): flowering stem with separate flowers and calyx. Coloured etching by M. Bouchard, 177-.
  • Purple and green mountains against a grey sky with the sun and moon. Watercolour by M. Bishop, 1966.
  • Purple and green mountains against a grey sky with the sun and moon. Watercolour by M. Bishop, 1966.
  • Left, outline of a face with purple and red dabs and darts; right, purple diagonals with red double-saltires. Watercolour by M. Bishop.
  • A purple woman bowing her head and holding out her arms, standing below purple and black spheres. Watercolour by M. Bishop, ca. 1970.
  • A purple woman bowing her head and holding out her arms, standing below purple and black spheres. Watercolour by M. Bishop, ca. 1970.
  • A purple person with spiky hair and an open mouth raising both hands, with purple blotches around. Watercolour by M. Bishop, 1963 (?).
  • A purple person with spiky hair and an open mouth raising both hands, with purple blotches around. Watercolour by M. Bishop, 1963 (?).
  • Purple parallel dashes meeting in a V-shape: two eye-shapes form the junction. Watercolour by M. Bishop, 1968.
  • Purple waves, in which seven people are drowning and one is holding an oar. Watercolour by M. Bishop, 1970.
  • Purple parallel dashes meeting in a V-shape: two eye-shapes form the junction. Watercolour by M. Bishop, 1968.
  • Purple and red crosses, saltires and V-forms criss-crossed diagonally in red. Watercolour by M. Bishop, ca. 1977.
  • Two purple daffodils. Watercolour by M. Bishop, ca. 1970.
  • Two purple daffodils. Watercolour by M. Bishop, ca. 1970.
  • Red and purple darts. Watercolour by M. Bishop, 1970.
  • Early purple orchid (Orchis mascula): flowering stem. Watercolour, 1904.
  • A purple daffodil. Watercolour by M. Bishop, ca. 1970.
  • A purple daffodil. Watercolour by M. Bishop, ca. 1970.
  • Cochlea of the inner ear - coloured - purple
  • (Left) red diagonals and purple loops; (right) red and purple diagonals; a red face in profile, with red blotches. Watercolour by M. Bishop, ca. 1977.
  • Purple bacteria or purple photosynthetic bacteria are pigmented by bacteriochlorophyll and carotenoids, giving them a colourful range of purples, pinks and oranges. They photosynthesize without producing oxygen as a by-product. This type of bacteria are proteobacteria which are phototrophic (produce their own food via photosynthesis)
  • Purple bacteria or purple photosynthetic bacteria are pigmented by bacteriochlorophyll and carotenoids, giving them a colourful range of purples, pinks and oranges. They photosynthesize without producing oxygen as a by-product. This type of bacteria are proteobacteria which are phototrophic (produce their own food via photosynthesis)
  • A purple and red face. Watercolour by M. Bishop, 197-.
  • Two red and purple excrescences. Watercolour by M. Bishop, 1967.
  • A purple star radiating darts. Watercolour by M. Bishop, 1968.
  • A purple face in distress. Watercolour by M. Bishop, 1977.
  • Left, ten rows of purple and red crosses, saltires, dashes and diagonals; right, nine rows of purple diagonals in V-formations. Watercolour by M. Bishop, ca. 1977.
  • Ten red arrows with purple teardrops. Watercolour by M. Bishop, 1967.
  • Red and purple darts and grids. Watercolour by M. Bishop, 1969.
  • Red darts with purple Y-shapes. Watercolour by M. Bishop, 1970.