Egeria densaBrazillian waterweed




Plant Community: Submersed

Depth: 6.5 m

Leaf Heterophylly: No

Leaf Arrangement: Whorled

Leaves/Whorl: 4 to 6

Divided Leaf Pattern: N/A

Leaflet Paris: N/A

Petal Number: 3

Flower Color: White

Degree of Invasiveness in Maine: Watch list

Look-alike Species: Hydrilla, Native waterweed, Water starwort, Mare's tail

Reproduction type: Fragmentation double node only

Origin: South America

THE PLANT: Aquatic plant; submersed; buoyant; biomass at water surface; dense rooted stands; drifting mats

THE LEAVES: Submersed; 3+ lance-shaped leaves per whorl; finely toothed (magnification); 1-3 cm long/ 5 mm wide

THE FLOWERS: Small (2 cm diameter); white petals; yellow center; emerge above water on stalks; male flowers only

THE FRUITS: No seeds

THE HABITAT: Sand, mud, stone

KEY ID FEATURES: 3 + leaves per whorl; leaves 1+ cm long (Maine's native waterweeds have <3 leaves/whorl and are <1 cm long); no tubers

Synonyms: Brazillian elodea, Anacharis



Credits: (c) GMRI