Plants › knotweed family
American jointweed
Polygonella americana
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.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
sandhill jointweedPolygonella fimbriata
October FlowerPolygonella polygamaStudy checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 818 |
|---|---|
| Texas | 210 |
| Georgia | 146 |
| South Carolina | 127 |
| Missouri | 83 |
| Arkansas | 63 |
| Illinois | 53 |
| Kentucky | 52 |
| North Carolina | 20 |
| Louisiana | 18 |
Counts show where people looked, not only where it lives.
Traits
Group and habits
- Subshrub growth formListed by a harvested source as having a subshrub growth form.USDA PLANTS Characteristics
- Perennial plantListed by a harvested source as having a perennial life duration.USDA PLANTS Characteristics
Classification
| Kingdom | Plants · Plantae |
|---|---|
| Phylum | Vascular Plants · Tracheophyta |
| Class | Dicots · Magnoliopsida |
| Order | pinks, cactuses, and allies · Caryophyllales |
| Family | knotweed family · Polygonaceae |
| Genus | Wireweeds · Polygonella |
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 American jointweed with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.