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Gutweed

Ulva intestinalis

Comprehensive Description

provided by Smithsonian Contributions to Botany
Ulva intestinalis Linnaeus

Ulva intestinalis Linnaeus, 1753:1163; Linnaeus, 1755:418; Blomster et al., 1998:332, figs. 49 (typotype), 52–54; Hayden et al., 2003:289, tbl. 4; Hayden and Waaland, 2004:377, tbl. 3; Pedroche et al., 2005:27; Mateo-Cid et al., 2006:48; Pacheco-Ruíz et al., 2008:191, 201.

Enteromorpha intestinalis (Linnaeus) Link in Nees, 1820:Index [2], 5; Howe, 1911:490; Setchell and Gardner, 1920b:252; Dawson, 1944:203; Dawson, 1961b:373; Dawson, 1962c:278; Bliding, 1963:139, figs. 87–89; Dawson, 1966a:5; Huerta-Múzquiz and Tirado-Lizárraga, 1970:126; Brusca and Thomson, 1975:42; Norris, 1976a:76, fig. 31; Huerta-Múzquiz, 1978:336, 338; Silva, 1979:340; L. Aguilar-Rosas et al., 1982:61; R. Aguilar-Rosas, 1982:84; Koeman and van den Hoek, 1982a:308, figs. 70–94; Littler and Arnold, 1982:309; L. Aguilar-Rosas and Bertsch, 1983:114, 119; L. Aguilar-Rosas et al., 1985:125; Huerta-Múzquiz and Mendoza-González, 1985:42; Ibarra-Obando and R. Aguilar-Rosas, 1985:96; L. Aguilar-Rosas and Pacheco-Ruíz, 1986:77; Tello-Velazco, 1986:73; L. Aguilar-Rosas and Pacheco-Ruíz, 1989:81; Sánchez-Rodríguez et al., 1989:39; R. Aguilar-Rosas and Machado-Galindo, 1990:188; Dreckmann et al., 1990:24, 37; Rocha-Ramírez and Siqueiros-Beltrones, 1991:30; González-González, 1993:443; Mateo-Cid et al., 1993:51; Stout and Dreckmann, 1993:4; R. Aguilar-Rosas and M. Aguilar-Rosas, 1994:517, 529; Mendoza-González et al., 1994:112; González-González et al., 1996:285; Mendoza-González and Mateo-Cid, 1996:74, 87, pl. 23: figs. 98–101; Anaya-Reyna and Riosmena-Rodríguez, 1996:862; Pacheco-Ruíz and Zertuche-González, 1996a:432; Leskinen and Pamilo, 1997:17; Bucio-Pacheco and Dreckmann, 1998:42; Yoshida, 1998:35; Mendoza-González and Mateo-Cid, 1998:24, 27; Blomster et al., 1998:319, figs. 1–3, 16–26, 27–29, 49, 52–54; Rodríguez-Morales and Siqueiros-Beltrones, 1999:30; L. Aguilar-Rosas et al., 2000:133; León-Tejera and González-González, 2000:327; Paul-Chávez and Riosmena-Rodríguez, 2000:146; Cruz-Ayala et al., 2001:190; Abbott and Huisman, 2004:49, fig. 7A–C; Riosmena-Rodríguez et al., 2005:101; Hernández-Herrera et al., 2005:146; R. Aguilar-Rosas et al. 2005b:35; Dreckmann et al., 2006:153.

Enteromorpha marchantiae Setchell et N. L. Gardner, 1924a:716, pl. 16: figs. 40–42.

Algae usually simple, tubular and smooth throughout (sometimes irregularly inflated and constricted), up to 15 mm in diameter; attenuated toward base, remaining tubular (rarely becoming slightly compressed) and broadening upward; rarely branched. Cells in surface view, irregularly arranged throughout; 5–10 µm wide and 5–12 (–17) µm long; with a single cup-shaped chloroplast and usually 1(–2) pyrenoid(s).

HABITAT. On rocks, occasionally epiphytic on other algae; high to low intertidal; also dredged 4–50 m (Dawson, 1944).

DISTRIBUTION. Gulf of California: Puerto Peñasco to Bahía La Paz. Pacific coast: Alaska to Chiapas; Peru; Chile; Hawaiian Islands; Japan; China.

TYPE LOCALITY. “In Mari omni” (Linnaeus, 1753); probably Woolwich, River Thames, London, England (based on selection of lectotype illustration of Dillenius [1742:pl. 9: fig. 7] and typotype [see Stearn, 1957:129] by Blomster et al. [1999:332, figs. 49, 52–54]).
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bibliographic citation
Norris, James N. 2010. "Marine algae of the northern Gulf of California : Chlorophyta and Phaeophyceae." Smithsonian Contributions to Botany. 276-276. https://doi.org/10.5479/si.0081024X.94.276

Ulva intestinalis

provided by wikipedia EN

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Large green lumps of Ulva intestinalis floating among other brown algae in Brofjorden

Ulva intestinalis is a green alga in the family Ulvaceae, known by the common names sea lettuce, 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]

Distribution

Generally 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

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]

In other languages

References

  1. ^ Gutweed - Enteromorpha intestinalis
  2. ^ Grass-kelp, Gutweed Archived 2015-06-20 at the Wayback Machine
  3. ^ 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
  4. ^ 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
  5. ^ "Ulva intestinalis". Seaweeed of Alaska. Retrieved March 24, 2013.
  6. ^ a b Guiry, M.D. (2012). "Ulva intestinalis Linnaeus, 1753". WoRMS. World Register of Marine Species. Retrieved March 24, 2013.
  7. ^ W. A., Nelson (2013). New Zealand seaweeds : an illustrated guide. Wellington, New Zealand: Te Papa Press. p. 42. ISBN 9780987668813. OCLC 841897290.
  8. ^ "Gut weed - Ulva intestinalis". Retrieved March 24, 2013.
  9. ^ Morton, O. 1994. Marine Algae of Northern Ireland. Ulster Museum ISBN 0 900761 28 8

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Ulva intestinalis: Brief Summary

provided by wikipedia EN
 src= Large green lumps of Ulva intestinalis floating among other brown algae in Brofjorden

Ulva intestinalis is a green alga in the family Ulvaceae, known by the common names sea lettuce, gutweed and grass kelp. 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.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN