Plants › Sunflowers, Daisies, Asters, and Allies
Anderson's thistle
Cirsium andersonii
24 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.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
Cobwebby ThistleCirsium occidentale
Bull ThistleCirsium vulgare
Arizona thistleCirsium arizonicum
musk thistleCarduus nutans
Elk ThistleCirsium scariosum
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 2,458 |
|---|---|
| California | 1,706 |
| Nevada | 750 |
| Oregon | 2 |
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
| Kingdom | Plants · Plantae |
|---|---|
| Phylum | Vascular Plants · Tracheophyta |
| Class | Dicots · Magnoliopsida |
| Order | Sunflowers, Bellflowers, Fanflowers, and Allies · Asterales |
| Family | Sunflowers, Daisies, Asters, and Allies · Asteraceae |
| Genus | Plume Thistles · Cirsium |
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- Traits: USDA PLANTS Characteristics (U.S. Government work / public domain)
- How much to rely on each source
Remember the name next time.
Practise Anderson's thistle with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.