Cirsium undulatum
Gray Thistle, Grey Thistle
Other regional names: Pasture Thistle +3 more
- Pasture Thistle
- Wavy Leaf Thistle
- Wavy Leaved Thistle
- Wavyleaf Thistle
Also known as: Carduus megacephalus (A.Gray) Nutt. ex Daniels, 1911 +14 more
- Carduus megacephalus (A.Gray) Nutt. ex Daniels, 1911
- Carduus megacephalus A.Nelson
- Carduus undulatus Nutt.
- Carduus undulatus var. megacephalus Greene
- Carduus undulatus var. undulatus
- Cirsium megacephalum (A.Gray) Cockerell
- Cirsium megacephalum (A.Gray) Cockerell ex Daniels
- Cirsium undulatum f. album Farw.
- Cirsium undulatum f. undulatum
- Cirsium undulatum subsp. undulatum
- Cirsium undulatum var. franktonis B.Boivin
- Cirsium undulatum var. megacephalum (A.Gray) Fernald
- Cnicus undulatus (Nutt.) A.Gray
- Cnicus undulatus var. megacephalus A.Gray
- Cnicus undulatus var. undulatus
Botanical Data
- Taxonomic Rank: Species
- Botanical Family: Asteraceae
- WCVP Morphological Data: Recorded natively as a perennial.
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Cirsium undulatum (commonly known as Gray Thistle or Grey Thistle) is a herbaceous perennial belonging to the Asteraceae family. Found natively in North America, this species is primarily associated with temperate conditions. The genus Cirsium is notably large, comprising more than 600 species.
Macro Climate
Temperate
Plant Type
Herbaceous Perennial
Native Range
Continents (WGSRPD)
NORTHERN AMERICA
Regions (WGSRPD)
North-Central U.S.A., Northeastern U.S.A., Northwestern U.S.A., South-Central U.S.A., Southeastern U.S.A., Southwestern U.S.A., Western Canada
Botanical Countries (WGSRPD L3)
Alberta, Arizona, British Columbia, California, Colorado, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Manitoba, Michigan, Minnesota, Missouri, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, Oregon, Pennsylvania, Saskatchewan, South Dakota, Texas, Utah, Washington, Wisconsin, Wyoming
Introduced Range
An “Introduced” distribution indicates that the plant is recorded outside its native range in that region as a result of deliberate or accidental human introduction. Introduced records may include casual, naturalized or invasive populations, but do not include plants that are only cultivated or planted without self-sustaining populations.
Botanical Countries (Non-Native)
Mexico Northeast