Cladonia Cladonia are the primary food source for reindeer and caribou. They live on rotten wood, here in company with moss plants. Lichens are a community (symbiosis) of fungi and algae. Scanning electron microscope, (at cm)
Not technically EM but cool: Ovulation. The egg (pink at centre) has ruptured the external surface of the ovary (brown), known as the germinal epithelium, and has started its journey through the Fallopian tube towards the uterus.