Lessonia (alga)

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This article is about the seaweed genus. For the tyrant-flycatcher genus, see Lessonia (bird).
Alger, Lessonia nigrescens, Nordisk familjebok.png
Lessonia nigrescens
Scientific classification
(unranked): SAR
Superphylum: Heterokonta
Class: Phaeophyceae
Order: Laminariales
Family: Lessoniaceae
Genus: Lessonia
Bory de Saint-Vincent, 1825

See text

Lessonia is a genus of large kelp native to the southern Pacific Ocean. It is distributed along the coasts of South America, New Zealand, Tasmania, and the Antarctic islands.[1]

This is one of two principal genera in kelp forests (the other is Macrocystis). In Chile, the preservation of Lessonia wild kelp is a crucial factor for the rocky shores. By harvesting these wild populations of Lessonia kelp, marine biologists are able to analyze the effects of kelp towards wildlife.[2]

Some species are of economic importance, such as Lessonia nigrescens, which is harvested for alginate.[3]



  1. ^ Cho, G. Y.; Klochkova, N. G.; Krupnova, T. N.; Boo, S. M. (2006). "The reclassification of Lessonia laminarioides (Laminariales, Phaeophyceae): Pseudolessonia gen. nov. 1" (PDF). Journal of Phycology. 42 (6): 1289–1299. doi:10.1111/j.1529-8817.2006.00280.x. 
  2. ^ Orostica, M. H.; Aguilera, M. A.; Donoso, G. A.; Vásquez, J. A.; Broitman, B. R. (2014). "Effect of grazing on distribution and recovery of harvested stands of Lessonia berteroana kelp in northern Chile". Marine Ecology Progress Series. 511: 71–82. doi:10.3354/meps10931. 
  3. ^ Venegas, M.; Tala, F.; Fonck, E.; Vásquez, J. (January 1992). "Sporangial sori on stipes of Lessonia nigrescens Bory (Laminariales, Phaeophyta): A high frequency phenomenon in intertidal populations of northern Chile". Botanica Marina. 35 (6): 573–578. doi:10.1515/botm.1992.35.6.573. 

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