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Plants › Sunflowers, Daisies, Asters, and Allies

swamp thistle

Cirsium muticum

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Wildlife study photograph from iNaturalist.
(c) jsamyn, some rights reserved (CC BY-NC)

28 photos

Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.

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Photos you add are credited to you, and you keep the copyright.

Easily confused with

Study checks a spoken answer against these, and tells you which one you named.

Where it is recorded

Records by month in Ontario.January 92, February 95, March 150, April 293, May 563, June 264, July 199, August 180, September 189, October 155, November 97, December 86.
United States5,852
Canada3,354
Ontario2,361
Michigan745
Minnesota549
Wisconsin532
Pennsylvania518
New York460
Quebec460
Ohio386

Counts show where people looked, not only where it lives.

Traits

Group and habits

  • Forb or herb growth formListed by a harvested source as having a forb or herbaceous growth form.USDA PLANTS Characteristics
  • Wetland-associatedListed by a harvested source as obligate or frequent in wetland habitat.USDA PLANTS Characteristics
  • Biennial plantListed by a harvested source as having a biennial life duration.USDA PLANTS Characteristics
  • Pollinator-associated plantDescends from a plant lineage commonly associated with pollinators.Inferred from its group

Classification

KingdomPlants · Plantae
PhylumVascular Plants · Tracheophyta
ClassDicots · Magnoliopsida
OrderSunflowers, Bellflowers, Fanflowers, and Allies · Asterales
FamilySunflowers, Daisies, Asters, and Allies · Asteraceae
GenusPlume Thistles · Cirsium

Study it in a deck

Or build your own from the species near you.

Sources

Remember the name next time.

Practise swamp thistle with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.

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