Ulva intestinalis is a green alga in the family Ulvaceae, known by the common names sea lettuce, green bait weed, gutweed,[1] and grass kelp.[2] Until they were reclassified by genetic work completed in the early 2000s, the tubular members of the sea lettuce genus Ulva were placed in the genus Enteromorpha.[3]
The fronds have branches and are completely tubular expanding in width to mid-thallus, reaching 15 cm long or more. The cells are irregularly arranged and the chloroplast is hood-shaped and placed to one side, generally with only one pyrenoid.[3][4] 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.[8] The alga may be reproductive at all times of the year, and has a life-cycle with alternation of generations, in which the gametophyte and sporophyte are isomorphic, having identical morphology.[4] In some references the species (Ulva intestinalis) is treated as two subspecies: ssp. intestinalis (L.) Link and ssp. compressa (L.) Link.[4][9]
^ abGuiry, M.D., John, D.M., Rindi, F. and McCarthy, T.K. (Eds) 2007. New Survey of Clare Island. Volume 6: The Freshwater and Terrestrial Algae. p. 23. Royal Irish Academy. ISBN978-1904890-31-7
^ abcdBurrows, E.M. 1991. Seaweeds of the British Isles. Volume 2 Chlorophyta. British Museum (Natural History). ISBN0-565-00981-8
^"Ulva intestinalis". Seaweed of Alaska. Retrieved March 24, 2013.
^W. A., Nelson (2013). New Zealand seaweeds : an illustrated guide. Wellington, New Zealand: Te Papa Press. p. 42. ISBN9780987668813. OCLC 841897290.
^"Gut weed - Ulva intestinalis". Retrieved March 24, 2013.
^Morton, O. 1994. Marine Algae of Northern Ireland. Ulster Museum ISBN0 900761 28 8
April 13, 2024
ulva, intestinalis, green, alga, family, ulvaceae, known, common, names, lettuce, green, bait, weed, gutweed, grass, kelp, until, they, were, reclassified, genetic, work, completed, early, 2000s, tubular, members, lettuce, genus, ulva, were, placed, genus, ent. Ulva intestinalis is a green alga in the family Ulvaceae known by the common names sea lettuce green bait weed gutweed 1 and grass kelp 2 Until they were reclassified by genetic work completed in the early 2000s the tubular members of the sea lettuce genus Ulva were placed in the genus Enteromorpha 3 Ulva intestinalisScientific classification unranked ViridiplantaeDivision ChlorophytaClass UlvophyceaeOrder UlvalesFamily UlvaceaeGenus UlvaSpecies U intestinalisBinomial nameUlva intestinalisL SynonymsEnteromorpha intestinalisLarge green lumps of Ulva intestinalis floating among other brown algae in Brofjorden Contents 1 Distribution 2 Description 3 In other languages 4 ReferencesDistribution editGenerally world wide 4 It can be found in Bering Sea near Alaska Aleutian islands Puget Sound Japan Korea Mexico Philippines and Russia 5 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 It is also found in the shores of the Pacific Ocean including in New Zealand 6 7 Description editThe fronds have branches and are completely tubular expanding in width to mid thallus reaching 15 cm long or more The cells are irregularly arranged and the chloroplast is hood shaped and placed to one side generally with only one pyrenoid 3 4 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 8 The alga may be reproductive at all times of the year and has a life cycle with alternation of generations in which the gametophyte and sporophyte are isomorphic having identical morphology 4 In some references the species Ulva intestinalis is treated as two subspecies ssp intestinalis L Link and ssp compressa L Link 4 9 In other languages editDanish tarm rorhinde Dutch echt darmwier French enteromorphe German Darmtang gemeiner Darmtang Norwegian tarmgronske Polish salata tasma watka 6 Swedish tarmalg Thai sahrayisik Portuguese erva patinhaReferences edit nbsp Wikimedia Commons has media related to Ulva intestinalis Gutweed www kscience co uk Retrieved 2023 12 05 Grass kelp Gutweed Archived 2015 06 20 at the Wayback Machine a b Guiry M D John D M Rindi F and McCarthy T K Eds 2007 New Survey of Clare Island Volume 6 The Freshwater and Terrestrial Algae p 23 Royal Irish Academy ISBN 978 1904890 31 7 a b c d Burrows E M 1991 Seaweeds of the British Isles Volume 2 Chlorophyta British Museum Natural History ISBN 0 565 00981 8 Ulva intestinalis Seaweed of Alaska Retrieved March 24 2013 a b Guiry M D 2012 Ulva intestinalis Linnaeus 1753 WoRMS World Register of Marine Species Retrieved March 24 2013 W A Nelson 2013 New Zealand seaweeds an illustrated guide Wellington New Zealand Te Papa Press p 42 ISBN 9780987668813 OCLC 841897290 Gut weed Ulva intestinalis Retrieved March 24 2013 Morton O 1994 Marine Algae of Northern Ireland Ulster Museum ISBN 0 900761 28 8 Retrieved from https en wikipedia org w index php title Ulva intestinalis amp oldid 1192323135, wikipedia, wiki, book, books, library,
