Rare, Threatened, and Endangered Plants


The following reports identify those native Maryland plants that are among the least understood, the rarest, and the most in need of conservation efforts. It includes species occurring in Maryland that are on the federal list of Endangered and Threatened Wildlife and Plants under the Endangered Species Act (ESA), species currently on the State’s Threatened and Endangered Species list, and additional species that are considered rare or under assessment by the Wildlife and Heritage Service.

Compiled by Wildlife and Heritage Service staff and conservation partners, this list of rare species is a result of more than 40 years of effort to gather, research, and analyze data from numerous sources, such as herbaria, scientific literature, unpublished documents, reports from botanists and amateur naturalists, and extensive field work conducted by scientists from the Department of Natural Resources (DNR).

While information is constantly updated, the regulatory process is more complex; as such, updates to the Rare, Threatened, and Endangered Species list are made periodically. The reports below contains conservation status rank and State legal status revisions since our last published list in 2019.

Rare, Threatened and Endangered Plants of Maryland​

Expanded Rare, Threatened, and Endangered Plants of Maryland

RTE Lists by County​

​​​​​​​​​​​Allegany County
Anne Arundel County
Baltimore City
Baltimore County
Calvert County
Caroline County
Carroll County
Cecil County
Charles County
Dorchester County
Frederick County
Garrett County
Harford County
Howard County
Kent County
Montgomery County
Prince George's County
Queen Anne's County
Talbot County
St. Mary's County
Somerset County
Washington County
Wicomico County
Worcester County​​​​​​​​​​​​​​


Rare, Threatened, and Endangered Plant Fact Sheets

American Ginseng
Appalachian Sandwort
Atamasco Lily
Bald Cypress Swamps
Belt Wood Canopy
Blue Wild Indigo
Buttercup Scorpionweed
Crested Coralroot
Crossleaf Milkwort
Earleaf False Foxglove
Fraser's Sedge
Fringed Gentian
Hairy Snoutbean
Large Purple Fringed Orchid
Nantucket Shadbush
Scarlet Indian-paintbrush
Shale-barren Ragwort
Small White Lady's-slipper
Sundial Lupine
Swallow Falls Snag
Sweet Pinesap
Sweet-scented Indian-plantain
Tawny Cottongrass
Virginia Mallow
Wood Lily
Yellow Nailwort
Yellow Water-crowfoot