Desmarestia

Genus of brown algae

For the fairy called gruagach, see Brownie (folklore). For the other seaweed called landlady's wig, see Ahnfeltia plicata. For the other genus called mermaid's hair, see Cladophora.

Desmarestia

Desmarestia viridis
Scientific classification
Domain:  | Eukaryota
Clade:  | Diaphoretickes
Clade:  | SAR
Clade:  | Stramenopiles
Phylum:  | Gyrista
Subphylum:  | Ochrophytina
Class:  | Phaeophyceae
Order:  | Desmarestiales
Family:  | Desmarestiaceae
Genus:  | Desmarestia
J.V.Lamouroux, 1813[1]
Type species
Desmarestia aculeata

(L.) J.V.Lamouroux

Desmarestia is a genus of brown algae found worldwide. It is also called acid weed, acid kelp, acidweed,[2][3] oseille de mer, sea sorrel,[4] ウルシグサ (urushi-gusa), stacheltang, mermaid's hair, landlady's wig, or gruagach.[5] However, 'sea sorrel' can also specifically refer to Desmarestia viridis. Members of this genus can be either annual or perennial.[6] Annual members of this genus store sulfuric acid in intracellular vacuoles. When exposed to air they release the acid, thereby destroying themselves and nearby seaweeds in the process. They are found in shallow intertidal zones.[6]

Ingesting sulfuric acid can cause severe digestive disturbances.[7] but since sulfuric acid tastes extremely sour, members of the genus are unlikely to be eaten in harmful quantities.[7]

The genus was named in honor of Anselme Gaëtan Desmarest.[1]

## Species

[edit]

AlgaeBase lists 32 currently accepted species within the genus Desmarestia, not including variations and subspecies.[6]

* Desmarestia aculeata (L.) J.V.Lamouroux \- Type specimen for the genus
* Desmarestia anceps (Montagne)
* Desmarestia antarctica (R.L.Moe & P.C.Silva)
* Desmarestia chordalis (J.D.Hooker & Harvey)
* Desmarestia confervoides (Bory de Saint-Vincent) M.E.Ramírez & A.F.Peters
* Desmarestia distans (C.Agardh) J.Agardh
* Desmarestia dudresnayi J.V.Lamouroux ex Léman
* Desmarestia farcta Setchell & Gardner
* Desmarestia filamentosa E.Y.Dawson
* Desmarestia firma (C.Agardh) Skottsberg
* Desmarestia foliacea V.A.Pease
* Desmarestia gayana Montagne
* Desmarestia herbacea (Turner) J.V.Lamouroux
* Desmarestia inanis Postels & Ruprecht
* Desmarestia intermedia Postels & Ruprecht
* Desmarestia kurilensis Yamada
* Desmarestia latifrons (Ruprecht) Kützing
* Desmarestia latissima Setchell & Gardner
* Desmarestia ligulata (Stackhouse) J.V.Lamouroux
* Desmarestia menziesii J.Agardh
* Desmarestia muelleri M.E.Ramírez & A.F.Peters
* Desmarestia munda Setchell & N.L.Gardner
* Desmarestia patagonica Asensi
* Desmarestia peruviana Montagne
* Desmarestia pinnatinervia Montagne
* Desmarestia pteridoides Reinsch
* Desmarestia rossii J.D.Hooker & Harvey
* Desmarestia sivertsenii Baardseth
* Desmarestia tabacoides Okamura
* Desmarestia tortuosa A.R.O. Chapman
* Desmarestia tropica W.R.Taylor \- tropical acidweed
* Desmarestia viridis (O.F.Müller) J.V.Lamouroux \- stringy acid kelp, green acid kelp, Desmarest's green weed, or sea sorrel

## Gallery

[edit]

* Artistic rendering of Desmarestia ligulata

* Artistic rendering of Desmarestia kurilensis

* Artistic rendering of Desmarestia latifrons

## References

[edit]

1. ^ a b Lamouroux, Jean Vincent Félix (1813). "Essai sur les genres de la famille des thalassiophytes non articulées" (PDF). Annales du Muséum d'Histoire Naturelle, Paris (in French). 20: 43–45\. OCLC 2099267. Retrieved 11 December 2017.43-45&rft.date=1813&rft_id=info:oclcnum/2099267&rft.aulast=Lamouroux&rft.aufirst=Jean+Vincent+Félix&rft_id=http://img.algaebase.org/pdf/562E29B40301733B85MQrj41D8EE/17071.pdf&rfr_id=info:sid/en.wikipedia.org:Desmarestia" class="Z3988">
2. ^ Watson, Jane (30 April 2014). "Spatial and temporal variation in kelp forest composition off the NW coast of Vancouver Island, British Columbia". Salish Sea Ecosystem Conference. Retrieved 12 December 2017. "In general, annual species such as Acid Weed (Desmarestia spp,) were highly variable in abundance"
3. ^ Warneke, Alex (5 December 2014). "These are a few of my favorite species: Desmarestia". Deep Sea News. Retrieved 12 December 2017. "Rightly named "Acid Weed," the internal pH of Desmarestia has been estimated as low as 0.6 pH."
4. ^ Dickinson, Carola I. (1963). British Seaweeds. Kew series. Vol. 3\. London: Eyre & Spottiswoode. p. 76\. OCLC 1437555. Retrieved 13 December 2017.
5. ^ "Desmarestia". SuriaLink SeaPlants Handbook. Archived from the original on 5 January 2020. Retrieved 13 December 2017.
6. ^ a b c M.D. Guiry. "Desmarestia J.V.Lamouroux". AlgaeBase. Retrieved November 5, 2013.
7. ^ a b Turner, Nancy J.; von Aderkas, Patrick (2009). "3: Poisonous Plants of Wild Areas". The North American Guide to Common Poisonous Plants and Mushrooms. Portland, OR: Timber Press. p. 116\. ISBN 9780881929294. OCLC 747112294.

Taxon identifiers

Desmarestia|

* Wikidata: Q3024482
* Wikispecies: Desmarestia
* AlgaeBase: 56
* CoL: 7NVWD
* eFloraSA: Desmarestia
* EoL: 10713
* GBIF: 3200019
* iNaturalist: 153316
* IRMNG: 1011533
* ITIS: 11314
* NBN: NHMSYS0021058376
* NCBI: 31339
* NZOR: 93700ee3-c9f5-4f0d-a4ae-ba56d26a5377
* Open Tree of Life: 388863
* WoRMS: 144061

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