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Laminaria

Laminaria
Laminaria hyperborea
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Clade: Stramenopiles
Phylum: Gyrista
Subphylum: Ochrophytina
Class: Phaeophyceae
Order: Laminariales
Family: Laminariaceae
Genus: Laminaria
J. V. Lamouroux
Species

ca. 30 species; see text

Laminaria setchellii at Montana de Oro State Park

Laminaria is a genus of brown seaweed in the order Laminariales (kelp), comprising 31 species native to the north Atlantic and northern Pacific Oceans. This economically important genus is characterized by long, leathery laminae and relatively large size. Some species are called Devil's apron, due to their shape,[1] or sea colander, due to the perforations present on the lamina.[2][unreliable source?] Others are referred to as tangle. Laminaria form a habitat for many fish and invertebrates.[3]

The life cycle of Laminaria has heteromorphic alternation of generations which differs from Fucus. At meiosis the male and female zoospores are produced separately, then germinate into male and female gametophytes. The female egg matures in the oogonium until the male sperm fertilizes it.[4] Life-Cycle: The most apparent form of Laminaria is its sporophyte phase, a structure composed of the holdfast, the stipe, and the blades. While it spends its time predominately in the sporophyte phase, it alternates between the sporophyte and its microscopic gametophyte phase.[5][unreliable source?]

Laminaria japonica (J. E. Areschoug – Japón) [6] is now regarded as a synonym of Saccharina japonica[7] and Laminaria saccharina is now classified as Saccharina latissima.[8]

  1. ^ "Devil's Apron". Webster's Revised Unabridged Dictionary. C. & G. Merriam Co. 1913.
  2. ^ "Devil's apron - Sea Vegetable". Archived from the original on October 16, 2008. Retrieved 2009-02-06.
  3. ^ "Laminaria | algae". Encyclopædia Britannica. Retrieved 2017-03-30.
  4. ^ Evert, Ray; Eichhorn, Susan (2013). Raven Biology of Plants. USA: W. H. Freeman and Company. p. 338. ISBN 978-1-4292-1961-7.
  5. ^ Guiry, Michael. "Kelps: Laminaria and Saccharina". Archived from the original on November 19, 2007. Retrieved 2009-02-06.
  6. ^ T. Tori (1998). An Illustrated Atlas of the Life History of Algae. Uchida Rokakuho Publishing Co., Ltd. Tokyo. ISBN 978-4-7536-4057-7.[page needed]
  7. ^ M. D. Guiry & Wendy Guiry (2006-09-29). "Laminaria japonica J. E. Areschoug". AlgaeBase.
  8. ^ Saccharina latissima (Linnaeus) J.V. Lamouroux Archived 2011-10-05 at the Wayback Machine The Seaweed Site. Retrieved 2011-09-20.

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