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Plants › Sunflowers, Daisies, Asters, and Allies

Wheeler's thistle

Cirsium wheeleri

Learn Wheeler's thistle freeHow it works
Wildlife study photograph from iNaturalist.
(c) jkoerner007, some rights reserved (CC BY-NC)

25 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 Arizona.January 54, February 49, March 65, April 86, May 79, June 38, July 47, August 101, September 53, October 40, November 42, December 47.
United States877
Arizona813
Utah121
New Mexico76
Texas13
Nevada11
Colorado3
Mexico3
Sonora3

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
  • Perennial plantListed by a harvested source as having a perennial 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 Wheeler's 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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