Native & Naturalized Plants of the Carolinas & Georgia


965

Submersed aquatic w flowers & fruits above the surface (rooted); Forb
Perennial
Usually monoecious

Non-native: Eurasia
Documented growing wild in GA NC SC

Uncommon (rare in Piedmont)

Look for it in ponds and impoundments (habitat and range in our area uncertain), per Weakley's Flora

map
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INVASIVE

This plant is causing problems in natural areas outside its native range, according to authorities such as:

Alabama Invasive Plant Council, 2012
Georgia Exotic Pest Plant Council, 2006
SC Department of Natural Resources Aquatic Nuisance Species List, 2003
SC List of Regulated Pest Plant Species, 2017
Tennessee Exotic Pest Plant Council, 2009
US Fish & Wildlife Service
Virginia Department of Conservation and Recreation, 2014

 

Aquatic

LEAVES:
Leaves well-developed: pinnately divided with filiform segments
Submersed leaves whorled. Bracts of emersed shoots different than submersed lvs

FLOWER:
Spring/Summer/Fall
Reddish
Unisexual (rarely bisexual)
4 sepals
4 petals
8 stamens
Inferior ovary
Flowers in spikes

FRUIT:
Spring/Summer/Fall
Schizocarp of mericarps

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Saxifragales

WEAKLEY'S FLORA (11/30/12):
Myriophyllum spicatum   FAMILY Haloragaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Myriophyllum spicatum   FAMILY Haloragaceae

 

COMMON NAME:
Eurasian Water-milfoil


Click or hover over the thumbnails to see larger pictures.

image of Myriophyllum spicatum

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_mysp2_001_lvd

        

image of Myriophyllum spicatum

    wwwplantsifasufl_myrspi

        

plants.ifas.ufl.edu/myrspi.html

image of Myriophyllum spicatum

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org    bug_5273022

Month Unknown        

image of Myriophyllum spicatum

Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org     bug_5308029

Month Unknown        

image of Myriophyllum spicatum

Chris Evans, Illinois Wildlife Action Plan, Bugwood.org    bug_5330057

Month Unknown        

Stem diameter below inflorescence is up to 2x diameter of lower stem, per Weakley's Flora.

image of Myriophyllum spicatum

Graves Lovell, Alabama Dept. of Conservation & Natural Resources, Bugwood.org    bug_5400611

Month Unknown        

Leaves well-developed, pinnately divided with filiform segments, per Weakley's Flora.


click here to see other plants that look similar to this COMPARE aquatic plants

image of Myriophyllum spicatum

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org    bug_5447204

Month Unknown        

image of Myriophyllum spicatum

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org    bug_5447206

Month Unknown        

Flowers/fruits in erect spikes emersed from water, per Weakley's Flora.