Image: Misc pollen

Description: Pollen from a variety of common plants: sunflower (Helianthus annuus), morning glory Ipomoea purpurea, hollyhock (Sildalcea malviflora), lily (Lilium auratum), primrose (Oenothera fruticosa) and castor bean (Ricinus communis). The image is magnified some x500, so the bean shaped grain in the bottom left corner is about 50 μm long.
Title: Misc pollen
Credit: Source and public domain notice at Dartmouth College Electron Microscope Facility ([1], [2])
Author: Dartmouth College Electron Microscope Facility
Permission: This work has been released into the public domain by its author, Dartmouth College Electron Microscope Facility[3]. This applies worldwide. In some countries this may not be legally possible; if so: Dartmouth College Electron Microscope Facility[4] grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. "These images are in the public domain. Do with them what you will. If you have questions about the images or the microscopy and specimen preparation used to obtain images contact Louisa Howard . For questions regarding the research on the specimens, contact the person noted in the caption of the images."[5]
Usage Terms: Public domain
License: Public domain
Attribution Required?: No