Mounted specimen of trout lily plant (mistakenly identified as adder's tongue on label) on a loose herbarium sheet. The sheet is inserted into a related herbarium book by F. R. Wertz.
J. Ralph Wertz
This image is made available courtesy of the Ursinus College Archives.
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herbarium, plant specimen, trout lily, yellow dogtooth violet, Longsdale, Longswamp Township, Berks County