Yellow Floating Heart, Nymphoides peltata

Scientific Name: Nymphoides Peltata
Common Name(s): Yellow Floating Heart

INVASIVE to MAINE                                          Final edit check needed.

Research Summary
: Derick S
My observations were that this is a very odd plant that spreads around very easily. Also, it wasn't difficult to research because there was so many websites that I could not easily choose which one to use. There were so many resources because everywhere I went there was a link to a website. I found many things about the yellow floating heart that were interesting because I didn't know anything about it to begin with. These are some of the most important details and this website can help inform a lot of people about this invasive species.

Identifying Characteristics
  • The heart-shaped leaves.
  • 3 to 10 cm across.
  • Alternate on the stems and opposite on the flower stalks.
  • Leaves float on the water, have slightly wavy margins and often have purplish undersides.
  • Two to five yellow flowers from each flower stalks.
  • Flowers are 3-4 cm in diameter.
  • Each flower has five fringed petals.
  • Long stalk stem that goes to 4 meters in depth.
  • Rope-like.
  • Grows partly underground or along the sediment surface.
  • Short, thick clusters that are about four meters long.
  • Grow partly or completely below the sediment.

Taxonomy of Species
   Scientific Classification
 What That Classification Means
 Kingdom  Plantae  Plants-makes own food from sun, can't move, has eukaryotic cell.
 Phylum  Magnoliophyta  Flowering plants
 Class  Magnoliopsida  A flowering plant with two organisms in its early stage of development.   
 Leaves or the seed leaf of the embryo of a plant that usually appears at  
 Order  Solanales  Flowering plants, included in the genus of more or less advanced
 dicotyledonous herbs and some trees and shrubs are flowering plants
 whose seed contains two embryonic leaves .
 Family  Menyanthaceae  Buckbean family.
 Genus  Nymphoides hill
 Floating heart.
 Species  Nymphoides peltata
 Yellow floating heart

Similar species include:Nuphar variegata

Location and Movement
Origin/ Native Range
 India, Asia, Europe, Russia.
 Introduced as water garden plant in Alabama, 1891.
Spread of Species
  • Spreads from rain, store shipments and flooding.
  • Also, spread by canoes flipping over and having  the plant die and get in it.
  • This plant spreads by rain from the small seeds getting pushed down stream or moving to other ponds from floods.
  • Also, spreads from kids playing around with the plant.
Where is it now invasive?  TX ,NY, WA, OR, VT, RI, ME, OH, MA, MS, NC, PA, IL, IN, MO, DC, CO, CT, AL, AR, LA, ID, NJ,

Is this species in Maine?
Where has it been identified?
 Rockport, Augusta, Portland, and Freeport, ME.
Where did it come from?
 Shipments from Asia.

Natural Environment
 Swamps, rivers, ponds, marshy areas, and lakes.
Climate and Temperature Range
 Moist climate.  Temperature range from 55-85 degrees C and F.

Ecological Interactions  Producer
 It takes in sunlight through photosynthesis.
Consumed By
 Opossums, snakes, and birds.

  • Kills fish and underwater plants by taking most of the oxygen from the water. 
  • Also kills fish by taking sunlight from plants which is their food source.  Larger fish then die because the smaller fish are their food source.
 Human  Keeps humans from canoeing, kayaking, and swimming because the roots are stiff and hard to
 Economic  Costs millions of dollars to prevent and extremely impacts tourist industry.

Control- Little is know about the control of this species.
 Biological  No biological control.
 Mechanical/Manual  Dug up by divers and pulled up by hand.
 Cultural  It should not be sold as an ornamental plant.
 Chemical  Can't kill it with chemicals because it would poison the water source or kill remaining fish and  

Interesting Facts