Karlyn Grafals Nieves’s research while affiliated with University of Puerto Rico System and other places

... Even if no specific monitoring plots have been established, many studies have generated DNA barcode libraries for specific habitats [47], plant communities [48], or regional taxa [49][50][51] and are thereby expanding the global plant genetic library. Individual taxonomists are also generating DNA barcodes for specific groups of plants as either standard markers (e.g., [52][53][54][55]) or as an offshoot of their basic molecular phylogenetic investigations aimed at understanding evolutionary relationships. Preserved museum specimens can also be used to generate DNA barcodes [56]. ...

Reference:

The Expanding Role of DNA Barcodes: Indispensable Tools for Ecology, Evolution, and Conservation