Prior to its move to BRIT, the R. Dale Thomas Collection (NLU) was housed at the University of Louisiana at Monroe. The herbarium acronym NLU comes from the University’s previous name—Northeast Louisiana University—when Dr. R. Dale Thomas took the collection from 250 specimens to over 400,000. Today, the NLU herbarium contains an estimated 472,000 specimens of vascular and nonvascular plants collected across the globe. The NLU collection has strengths in Louisiana flora and in the daisy family, Asteraceae.
In May 2017, BRIT was chosen to house the collection when the University of Louisiana at Monroe could no longer care for it.