Vascular Plants of Maryland, USA:

This checklist provides the first complete, vouchered account of Maryland’s vascular flora. In total, we discuss 3,525 taxa and document 2,918 established taxa for the state of Maryland, 71.8% of which are native and 28.2% of which are introduced. Of the native species, 737 (25.3%) are tracked by the Maryland Natural Heritage Program as of conservation concern. We exclude 324 taxa reported from Maryland by previous authors and provide justifications for these exclusions.