The table below is not intended to be a comprehensive list of all invasive species in Maryland, but includes species of concern to the Maryland Invasive Species Council (MISC). This list includes all updates approved as of the April 18, 2024 MISC meeting.

Scientific Name	Common Name	Habit	Aquatic Detail	Habitat	Regulated in Mid-Atlantic / US
Aldrovanda vesiculosa	Waterwheel plant	Forb	Floating	Aquatic	N/A
Alternanthera philoxeroides	Alligatorweed	Forb	Emergent	Aquatic/Wetland	N/A
Butomus umbellatus	Flowering-rush	Forb	Emergent	Aquatic	N/A
Cabomba caroliniana	Carolina fanwort	Forb	Submersed/Floating	Aquatic	N/A
Callitriche stagnalis	European waterstarwort	Forb	Emergent	Aquatic	N/A
Caulerpa taxifolia	Mediterranean clone of caulerpa	Alga		Aquatic	MD, USDA
Codium fragile ssp. tomentosoides	Dead man's fingers	Alga		Aquatic	N/A
Cyperus difformis	Smallflower umbrella sedge	Graminoid, Sedge	Emergent	Aquatic/Wetland	N/A
Didymosphenia geminata	Rock snot	Alga		Aquatic	N/A
Egeria densa	Brazilian waterweed	Forb	Submersed	Aquatic	MD
Eichhornia crassipes	Common water hyacinth	Forb	Floating	Aquatic	N/A
Glossostigma cleistanthum	Mudmat	Forb	Submersed/Emergent	Aquatic	N/A
Glyceria maxima	Rough mannagrass	Graminoid, Grass	Emergent	Aquatic	N/A
Gracilaria vermiculophylla	Red alga	Alga		Aquatic	N/A
Hydrilla verticillata	Hydrilla	Forb	Submersed	Aquatic	MD, PA, USDA
Hydrocharis morsus-ranae	European frog-bit	Forb	Floating	Aquatic	N/A
Hygrophila polysperma	Miramar weed	Forb	Submersed/Emergent	Aquatic	USDA
Iris pseudacorus	Yellow iris	Forb	Emergent	Aquatic	MD
Ludwigia peploides ssp. glabrescens	Floating primrose-willow	Forb	Emergent	Aquatic	N/A
Lythrum salicaria	Purple loosestrife	Forb		Aquatic/Wetland	PA, VA, WV
Marsilea quadrifolia	European water-clover	Fern	Floating	Aquatic	N/A
Murdannia keisak	Marsh dayflower	Forb	Emergent	Aquatic	N/A
Myriophyllum aquaticum	Parrotfeather	Forb	Emergent	Aquatic	MD
Myriophyllum spicatum	Eurasian water-milfoil	Forb	Submersed	Aquatic	N/A
Najas minor	Brittleleaf naiad	Forb	Submersed	Aquatic	N/A
Nasturtium officinale	Watercress	Forb	Emergent	Aquatic	N/A
Nelumbo nucifera	Sacred lotus	Forb	Floating	Aquatic	N/A
Nitellopsis obtusa	Starry stonewort	Alga		Aquatic	N/A
Nymphoides peltata	Yellow floating heart	Forb	Emergent	Aquatic	N/A
Oenanthe javanica	Java waterdropwort	Forb	Emergent	Aquatic	N/A
Persicaria hydropiper	Marsh-pepper smartweed	Forb	Emergent	Aquatic	N/A
Phalaris arundinacea	Reed canarygrass	Graminoid, Grass		Aquatic/Wetland	DE
Pistia stratiotes	Water lettuce	Forb	Emergent	Aquatic	N/A
Potamogeton crispus	Curly-leaved pondweed	Forb	Submersed	Aquatic	N/A
Prymnesium parvum	Golden alga	Alga		Aquatic	N/A
Salvinia minima	Water fern	Fern	Floating	Aquatic	N/A
Salvinia molesta	Giant salvinia	Fern	Floating	Aquatic	MD, VA, USDA
Schoenoplectiella mucronata	Ricefield bulrush	Graminoid, Sedge	Emergent	Aquatic	N/A
Stratiotes aloides	Water soldier	Forb	Submersed	Aquatic	N/A
Trapa bispinosa var. iinumai	Water chestnut	Forb	Floating	Aquatic	N/A
Trapa natans	European water chestnut	Forb	Floating	Aquatic	MD
Typha angustifolia	Narrow-leaved cattail	Graminoid, Cattail	Emergent	Aquatic	N/A
Typha x glauca	Hybrid cattail	Graminoid, Cattail	Emergent	Aquatic	N/A