cross section of an Encephalartos ferox coralloid root under a microscope, with the resident cyanobacteria visible as the tiny, green, disk-like spots.
Encephalartos senticosusLebombo cycad. Female cone. Included in the IUCN Red List as vulnerable. It is also listed in Appendix 1 of CITES. E. senticosus is found in the Lebombo Mountains of South Africa. Photographed at University of California Botanical Garden, Berkeley, CA