info@mindenpictures.com | 831 661 5551  | Login | Register

Premium wildlife and nature stock photos

for professional use
  • Results for
    • Heterostyly
  • (2)
Illustration of Cowslips (Primula veris) from 'Darwinism' by Alfred Wallace 1889. In 1862 Darwin reported how Primula plants have two forms of flowers, pin and thrum eyed,  differing in the height and...
90732621
90732621 Illustration of Cowslips (Primula veris) from 'Darwinism' by Alfred Wallace 1889. In 1862 Darwin reported how Primula plants have two forms of flowers, pin and thrum eyed, differing in the height and...© Paul D Stewart
Portraits of Cowslip (Primula veris) flowers,  pin and thrum eyed,  showing heterostyly ie  stigma at different positions. This was noted by Darwin and shows a mechanism to avoid self fertilisation.
90732582
90732582 Portraits of Cowslip (Primula veris) flowers, pin and thrum eyed, showing heterostyly ie stigma at different positions. This was noted by Darwin and shows a mechanism to avoid self fertilisation.© Paul D Stewart
powered by infradox.com