INHS Herbarium
There are three plant herbaria housed at the Robert Evers Laboratory: Illinois Natural History Survey Herbarium (ILLS), the University of Illinois Plant Biology Herbarium (ILL), and the University of Illinois Crop Evolution Laboratory Herbarium (CEL).
Together, these collections contain over 1,200,000 specimens, making this the second-largest herbarium in Illinois and the 10th-largest in the United States.