Myriophyllum
- Fine photomicrograph of a leaf of this species, with a description of the plant.
- http://www.microscopy-uk.org.uk/mag/artdec00/rnmyrio.html

Myriophyllum alterniflorum
- Several photographs of Alternate Water Milfoil growing in water, and its identifying features.
- http://www.plant-identification.co.uk/skye/haloragaceae/myriophyllum-alterniflorum.htm

Myriophyllum aquaticum
- Parrot feather watermilfoil.
- http://plants.usda.gov/java/profile?symbol=MYAQ2

Myriophyllum spicatum (Eurasian Watermilfoil)
- Taxonomic overview, distribution, biology, ecology, present status and potential threat, and control measures.
- http://www.cws-scf.ec.gc.ca/publications/inv/p1_e.cfm

Biological Control of Eurasian Watermilfoil (Myriophyllum spicatum)
- with a focus on biological control using the native milfoil weevil (Euhrychiopsis lecontei)
- http://www.fw.umn.edu/research/milfoil/milfoilbc.html