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Plants › Sunflowers, Daisies, Asters, and Allies

prairie thistle

Cirsium canescens

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Wildlife study photograph from iNaturalist.
(c) asherhiggins91, some rights reserved (CC BY)

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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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 Colorado.January 17, February 13, March 18, April 36, May 54, June 77, July 37, August 26, September 24, October 17, November 15, December 14.
Colorado672
United States609
Wyoming169
Nebraska120
South Dakota51
Iowa4
New Mexico3
Idaho3
Missouri1
Utah1

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
  • 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 prairie 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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