Plants
water star-grass
Heteranthera dubia
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.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
eel-grass pondweedPotamogeton zosteriformis
American eelgrassVallisneria americana
robbins' pondweedPotamogeton robbinsii
Fennel-leaf PondweedStuckenia pectinata
leafy pondweedPotamogeton foliosus
small pondweedPotamogeton pusillus
Membranosorus heterantherae
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 3,625 |
|---|---|
| Canada | 1,289 |
| Ontario | 939 |
| New York | 455 |
| Michigan | 350 |
| Texas | 320 |
| Wisconsin | 300 |
| Minnesota | 294 |
| Pennsylvania | 241 |
| Quebec | 233 |
Counts show where people looked, not only where it lives.
Traits
Group and habits
- Restoration or landscaping useListed as being used for restoration, landscaping, ornamental planting, erosion control, soil improvement, shade, windbreaks, pollution indicators, or wastewater purification.Kew World Checklist of Useful Plant Species
- 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
- Annual plantListed by a harvested source as having an annual life duration.USDA PLANTS Characteristics
- Perennial plantListed by a harvested source as having a perennial life duration.USDA PLANTS Characteristics
Study it in a deck
- Plants of Richmond city, Virginia, United States
- Wetland-associated Species of New Hampshire, United States
Or build your own from the species near you.
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- Traits: Kew World Checklist of Useful Plant Species (CC BY 4.0)
- Traits: USDA PLANTS Characteristics (U.S. Government work / public domain)
- How much to rely on each source
Remember the name next time.
Practise water star-grass with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.