Ulva intestinalis

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Ulva intestinalis
Ulva intestinalis.jpg
Scientific classification
Kingdom: Plantae
Phylum: Chlorophyta
Class: Ulvophyceae
Order: Ulvales
Family: Ulvaceae
Genus: Ulva
Species: U. intestinalis
Binomial name
Ulva intestinalis
  • Enteromorpha intestinalis

Ulva intestinalis is a green alga in the phylum Chlorophyta, of the genus Ulva (sea lettuce), also known by the common names gutweed and grass kelp.[citation needed] Until they were reclassified by genetic work completed in the early 2000s, the tubular members of the genus Ulva were in the genus Enteromorpha.


It can be found in Bering Sea near Alaska, Aleutian islands, Puget Sound, Japan, Korea, Mexico, and Russia.[1] Besides this, places it can be found in Israel, and in such European countries as Azores, Belgium, Denmark, Ireland, Norway, Poland, and in such seas as the Baltic and Mediterranean Sea.[2]


The fronds of the species may be 10–30 centimetres (3.9–11.8 in) long and 6–18 millimetres (0.24–0.71 in) wide. They have rounded tips as well.[3]

In other languages[edit]


  1. ^ "Ulva intestinalis". Seaweeed of Alaska. Retrieved March 24, 2013. 
  2. ^ a b Guiry, M.D. (2012). "Ulva intestinalis Linnaeus, 1753". World Register of Marine Species. Retrieved March 24, 2013. 
  3. ^ "Gut weed - Ulva intestinalis". Retrieved March 24, 2013.