DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Male pine cone. Light micrograph of a section through a male pine (Pinus sp.) cone, showing microsporophylls (leaves, purple) bearing microsporangia (pink) that contain numerous microspore pollen grains (blue). Magnification: x5 when printed 10 centimetres wide.
Model release not required. Property release not available.