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Elodea nuttallii (Planch.) H. St. John
western waterweed

General Information
Symbol: ELNU2
Group: Monocot
Family: Hydrocharitaceae
Duration: Perennial
Growth Habit: Forb/herb
Native Status: CAN   N
L48   N
Data Source and Documentation
Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM   


click on a thumbnail to view an image, or see all the Elodea thumbnails at the Plants Gallery


Symbol Scientific Name
ANNU7 Anacharis nuttallii Planch.
ELOC Elodea occidentalis (Pursh) H. St. John
ELCO5 Elodea columbiana H. St. John
ELMI5 Elodea minor (Engelm. ex Caspary) Farw.
ANOC7 Anacharis occidentalis (Pursh) Vict.
PHNU Philotria nuttallii (Planch.) Rydb.
PHAN14 Philotria angustifolia (Muhl.) Britton ex Rydb.
PHMI11 Philotria minor (Engelm. ex Caspary) Small
UDVEM Udora verticillata (L. f.) Spreng. var. minor Engelm. ex Caspary
PHOC3 Philotria occidentalis (Pursh) House


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Liliopsida – Monocotyledons
Subclass Alismatidae
Order Hydrocharitales
Family Hydrocharitaceae – Tape-grass family
Genus Elodea Michx. – waterweed
Species Elodea nuttallii (Planch.) H. St. John – western waterweed

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
Nuttall's waterweed
Special Concern

Wetland Status

Interpreting Wetland Status

Top Level Regions
Arid West OBL
Atlantic and Gulf Coastal Plain OBL
Eastern Mountains and Piedmont OBL
Great Plains OBL
Midwest OBL
Northcentral & Northeast OBL
Western Mountains, Valleys, and Coast OBL



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover