Plants › Sea Lettuces
Gutweed
Ulva intestinalis
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
Broadleaf Sea LettuceUlva lactuca
Green RopeAcrosiphonia coalita
Flexuous GutweedUlva flexuosa
Thread WeedUlva compressa
Green pin-cushion algaCladophora columbiana
EelgrassZostera marina
- Pyropia spiralis
Torrey's SurfgrassPhyllospadix torreyi
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 16,924 |
|---|---|
| British Columbia | 1,987 |
| Canada | 1,551 |
| Maine | 738 |
| California | 544 |
| Nova Scotia | 531 |
| United Kingdom | 313 |
| Washington | 283 |
| Quebec | 277 |
| Massachusetts | 244 |
Counts show where people looked, not only where it lives.
Classification
| Kingdom | Plants · Plantae |
|---|---|
| Phylum | green algae · Chlorophyta |
| Class | Ulvophycean green algae · Ulvophyceae |
| Order | Sea Lettuces and Allies · Ulvales |
| Family | Sea Lettuces · Ulvaceae |
| Genus | Sea Lettuces · Ulva |
Study it in a deck
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.
- How much to rely on each source
Remember the name next time.
Practise Gutweed with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.