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Cirsium undulatum (Nutt.) Spreng. var. undulatum
wavyleaf thistle

General Information
Symbol: CIUNU
Group: Dicot
Family: Asteraceae
Duration: Biennial
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    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   




Symbol Scientific Name
CAHE13 Carduus helleri Small
CAUN9 Carduus undulatus Nutt.
CIHE5 Cirsium helleri (Small) Cory
CIME7 Cirsium megacephalum (A. Gray) Cockerell
CIOCH Cirsium ochrocentrum A. Gray var. helleri (Small) Petr.
CIUNM Cirsium undulatum (Nutt.) Spreng. var. megacephalum (A. Gray) Fernald
CNUNM Cnicus undulatus A. Gray var. megacephalus


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 Magnoliopsida – Dicotyledons
Subclass Asteridae
Order Asterales
Family Asteraceae ⁄ Compositae – Aster family
Genus Cirsium Mill. – thistle
Species Cirsium undulatum (Nutt.) Spreng. – wavyleaf thistle
Variety Cirsium undulatum (Nutt.) Spreng. var. undulatum – wavyleaf thistle

Subordinate Taxa

This plant has no children

Legal Status

Noxious Weed 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 noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds.
Noxious weed
Cirsium undulatum
wavyleaf thistle
A list (noxious weeds)
Primary noxious weed



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