The Maryland Biodiversity Project provides information on plants, animals, fungi, throughout Maryland.
Vascular Plants of Maryland, USA: A Comprehensive Account of the State's Botanical Diversity
Wesley Knapp and Robert F. C. Naczi
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. Knapp, Wesley M., and Robert F. C. Naczi. Vascular Plants of Maryland, USA: A Comprehensive Account of the State’s Botanical Diversity. Smithsonian Contributions to Botany, number 113, viii + 151 pages, 1 figure, 17 May 2021.