Canadian anemone (Renunculaceae/Anemone pennsylvanica [Anemone canadensis L.]) Collected by Lewis Lindsay Dyche in Lawrence, Kansas, circa 1878–1915, unknown maker from the United States

An herbarium is a systematically arranged collection of preserved plants. The R. L. McGregor Herbarium houses approximately 400,000 specimens collected over the past 150 years. These include dried plant specimens (exsiccatae), seeds, and boxed and fluid-preserved vascular plant specimens. The herbarium also houses the largest single collection of plants from the grassland biome of central North America, as well as the largest collections of lichens and vascular plants from Kansas.

The Canadian anemone is native to Kansas, as well as to much of the Midwest, Eastern United States, and southern Canada. This specimen was collected by the naturalist Lewis Lindsay Dyche, whose career was based at the University of Kansas. In 1882, Dyche joined the faculty and offered courses in natural history, anatomy and physiology, taxidermy, and zoology.