Suaeda vera

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Suaeda vera
Suaeda vera, Sete 01.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Amaranthaceae
Genus: Suaeda
Species:
S. vera
Binomial name
Suaeda vera

Suaeda vera, also known as shrubby sea-blite, [1] [2] shrubby seablight [3] or in the USA sometimes as alkali seepweed, [4] is a species of flowering plant in the family Amaranthaceae (formerly classified under the Chenopodiaceae). It is a small shrub, with very variable appearance over its wide range. It is a halophyte, and occurs in arid and semi-arid saltflats, salt marshes and similar habitats.

Contents

Taxonomy

This species was first described according to the modern Linnaean system of taxonomy by Linnaeus himself in 1753, who called the species Chenopodium fruticosum. A student of his, Peter Forsskål, joined an expedition undertaking a scientific exploration of Egypt, Saudi Arabia, Yemen and further in 1760. Only one explorer survived the journey, but Forsskål's journal and notes made it safely back to Copenhagen, and in 1775 his new data was summarised by the last remaining member of the expedition. Forsskål named a number of Suaeda species from the region, including S. vera, S. vermiculata and S. fruticosa, [5] but the 1775 work was not validly published and therefore the names nomima invalida. In 1776 Forsskål's new genus Suaeda was validated by Johann Friedrich Gmelin, [6] and in 1791 Gmelin validated the species. [7] However, what Forsskål called S. vera was the same as Linnaeus's Chenopodium fruticosum, whereas what Forsskål called S. fruticosa was a species that does not occur in Europe, the Near East or North Africa. Nonetheless, the identities were switched, such that S. fruticosa, with the incorrect authority attribution (L.) Forssk. was and still is commonly used across the region, [8] [9] although the switched identity was discovered in the mid-20th century. [10]

William Forsyth Jr. translated Gmelin's 1791 thirteenth edition of the Systema Naturae into English as A Botanical nomenclator in 1794, but decided to move this species to Salsola vera in his translation, and gives Gmelin's 1776 work as the publication of the basionym, further confusing the issue. [11]

Another name and taxon tangled up in this confusion is S. vermiculata. According to Petteri Uotila, writing for the EUR+MED flora project in 2011, this is a species which is only found in Europe in Spain and Sicily, and is otherwise distributed in Africa, four of the Canary Islands, and the Middle East. [9] The African Plants Database agrees with Uotila that S. fruticosa does not occur in Africa, but states that the name was misapplied to populations of S. vermiculata in Africa, not to S. vera, while listing the same works. [12] The Database does agree that S. vera occurs in the Maghreb, and also gives S. fruticosa as a synonym, but S. fruticosa under a different authority attribution! [13]

G. Tutin's Flora Europaea (last edition in 1993) uses the name S. fruticosa for this taxon. [9]

Britain

The British botanist Clive A. Stace uses the name S. fruticosa for this species in his New Flora of the British Isles. [14] : 495  This usage was also found in the 1958 List of British Vascular Plants by James Edgar Dandy, but in 1969 Dandy corrected the nomenclature to S. vera. [10] Other British authorities use the name S. vera. [1] [2]

Iraq and Israel

The 2016 Flora of Iraq accepts S. fruticosa and S. vermiculata in the flora of Iraq, but not S. vera. [15] [16] [17] One of the only botanical authorities to recognise all three taxa within the country are Avinoam Danin and Ori Fragman-Sapir in Israel. According to them, all three taxa are valid species and each has a different habitat, with S. vera occurring along the Mediterranean coast and in the highlands of the central Negev Desert, [18] S. fruticosa occurring around the shores of the Dead Sea, [19] and with S. vermiculata in the valley of Arabah. [20] A further complication is that according to the Suaeda specialist Helmut Freitag in the 2001 Flora of Pakistan, the S. vermiculata in the 1966 Flora Palestina by Daniel Zohary is misidentified, and is actually S. fruticosa. [21]

Spain and Portugal

The name Suaeda vera was itself misapplied to a collection of S. vermiculata, which was reported in error in Portugal. [22] In the 1990 volume of the Flora Ibérica , only S. vera was stated to occur in Spain, not S. vermiculata or S. fruticosa. [5] The EUR+MED flora project has both S. vera and S. vermiculata occurring in Spain, but not S. fruticosa. [9] [22]

Description

It has a chromosome number of 2n=36. [14] [23]

Distribution

The range of this species is primarily along the coasts of the Mediterranean region. In Europe the range extends northwards along the Atlantic coasts of Spain, Portugal, France to south-eastern England. It does not extend around the Black Sea. [9]

Because of the taxonomic confusion, the distribution in Africa is somewhat more complicated. It occurs in the Canary Islands, the Maghreb countries of northern Africa, [9] and likely into the Sahel countries of Sudan and Mauritania, [13] but it is unclear if the populations further in southern Africa, formerly classified as Suaeda fruticosa, belong to S. vera or S. vermiculata. [12] [13] For example, the 1988 Atlas Florae Europaeae, which is based on an older edition of the Flora Europaea , includes Cape Verde for S. fruticosa, which this population isn't, but it is not clear to which taxon it actually belongs. [24] : 72 

In Asia it appears that this species is limited to around the Mediterranean region in the Levant and along the coasts of southern Anatolia. [9] [18] It does not extend eastwards into Iraq or Pakistan, here the realS. fruticosa occurs. [21] A similar situation seems to exist on the Arabian Peninsula.

Ecology

Seeds germinate more readily in fresh than in salt water. [23] : 309  In Britain it is a coastal species found particularly where shingle and salt marsh meet. [2]

Uses

It is one of a number of plants high in sodium known as 'barilla' which were used to make soda ash for use in the soap and glass industries. Large quantities were exported from North Africa in the 18th and 19th centuries. [25] In a trial in Tunisia it has been found possible to grow both Suaeda and the cordgrass Spartina alterniflora using seawater to irrigate them and increase yields, but only when additional nitrogen and phosphorus are added. The high salt content of the plants will be likely to limit their use as stand alone forage crops, it being more likely they will be used as components of a feed mix. [26]

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References

  1. 1 2 BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  2. 1 2 3 "Suaeda vera (Shrubby Sea-blite)". Online Atlas of the British and Irish Flora. Biological Records Centre. Retrieved 29 June 2012
  3. ↑ Suaeda fruticosa – Forssk.
  4. ↑ USDA, NRCS (n.d.). "Suaeda vera". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 4 December 2015.
  5. 1 2 Pedrol, J.; Castroviejo, S. (1990). Flora Ibérica (PDF) (in Spanish). Vol. II. Madrid: Real Jardín Botánico de Madrid. pp. 538, 539.
  6. ↑ "Suaeda vera Forssk". International Plant Names Index . The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens. Retrieved 19 October 2020.
  7. ↑ "Suaeda vera Forssk. ex J.F.Gmel. (1791)". International Plant Names Index . The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens. Retrieved 19 October 2020.
  8. ↑ Schenk, H. Jochen; Ferren, Wayne R. Jr. (1 August 2001). "On the sectional nomenclature of Suaeda (Chenopodiaceae)". Taxon. 50 (3): 857–873. doi:10.2307/1223715. ISSN   0040-0262. JSTOR   1223715.
  9. 1 2 3 4 5 6 7 Uotila, Petteri (2011). "Details for: Suaeda vera". EUR+MED flora project. Botanic Garden and Botanical Museum Berlin-Dahlem . Retrieved 18 October 2020.
  10. 1 2 Dandy, James Edgar (1969). "Nomenclatural changes in the list of British vascular plants" (PDF). Watsonia. 7 (3): 161. Retrieved 18 October 2020.
  11. ↑ "Suaeda vera Forssk. ex J.F.Gmel. (1776)". International Plant Names Index . The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens. Retrieved 19 October 2020.
  12. 1 2 Suaeda vermiculata. Conservatory and Botanical Garden of the City of Geneva . Retrieved 20 October 2020.{{cite book}}: |work= ignored (help)
  13. 1 2 3 Suaeda vera. Conservatory and Botanical Garden of the City of Geneva . Retrieved 20 October 2020.{{cite book}}: |work= ignored (help)
  14. 1 2 Stace, C. A. (2010). New Flora of the British Isles (Third ed.). Cambridge, U.K.: Cambridge University Press. ISBN   978-0-521-70772-5.
  15. ↑ "Suaeda vera Forssk. ex J.F.Gmel". Plants of the World Online . Royal Botanic Gardens, Kew. 2017. Retrieved 20 October 2020.
  16. ↑ "Suaeda vermiculata Forssk. ex J.F.Gmel". Plants of the World Online . Royal Botanic Gardens, Kew. 2017. Retrieved 20 October 2020.
  17. ↑ "Suaeda fruticosa Forssk. ex J.F.Gmel". Plants of the World Online . Royal Botanic Gardens, Kew. 2017. Retrieved 20 October 2020.
  18. 1 2 Danin, Avinoam; Fragman-Sapir, Ori (2019). "Suaeda vera Forssk. ex J.F.Gmel". Flora of Israel Online. Avinoam Danin. Retrieved 21 October 2020.
  19. ↑ Danin, Avinoam; Fragman-Sapir, Ori (2019). "Suaeda fruticosa Forssk. ex J.F.Gmel". Flora of Israel Online. Avinoam Danin. Retrieved 21 October 2020.
  20. ↑ Danin, Avinoam; Fragman-Sapir, Ori (2019). "Suaeda vermiculata J.F.Gmel". Flora of Israel Online. Avinoam Danin. Retrieved 20 October 2020.
  21. 1 2 Freitag, Helmut (2001). "Chenopodiaceae: Suaeda". Flora of Pakistan. Vol. 204. Karachi: University of Karachi.
  22. 1 2 Uotila, Petteri (2011). "Details for: Suaeda vermiculata". EUR+MED flora project. Botanic Garden and Botanical Museum Berlin-Dahlem. Retrieved 20 October 2020.
  23. 1 2 Chapman, V.J. (1947). "Biological Flora of the British Isles No. 21: Suaeda fruticosa Forsk. (vera J.F. Gmelin)". Journal of Ecology. 35: 303–310. doi:10.2307/2256519. JSTOR   2256519.
  24. ↑ Jalas, Jaako; Suominen, Juha (1988). Atlas Florae Europaeae. Vol. 2. Cambridge University Press. ISBN   0-521-34271-6.
  25. ↑ Wickens, G.E.; Field, David. V.; Goodin, Joe R. (2012). Plants for Arid Lands: Proceedings of the Kew International Conference on Economic Plants for Arid Lands held in the Jodrell Laboratory, Royal Botanic Gardens, Kew, England, 23–27 July 1984. Springer Science & Business Media. p. 181. ISBN   978-94-011-6830-4.
  26. ↑ Ahmad, R.; Malik, K.A. (2013). Prospects for Saline Agriculture. Springer Science & Business Media. pp. 404–408. ISBN   978-94-017-0067-2.
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