Tetraena alba

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Tetraena alba
Zygophyllum album Metlaoui Tunisia.JPG
Growing in Tunisia
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Zygophyllales
Family: Zygophyllaceae
Genus: Tetraena
Species:
T. alba
Binomial name
Tetraena alba
(L.f.) Beier & Thulin [1]
Synonyms [1]
  • Zygophyllum albumL.f.
  • Zygophyllum amblyocarpumBaker
  • Zygophyllum proliferumForssk.

Tetraena alba (synonym Zygophyllum album) is a species of plant in the family Zygophyllaceae which is found in arid regions of Africa and the Arabian Peninsula. It is a salt tolerant plant and dominates many of the plant communities in which it grows.

Contents

Description

Tetraena alba is a low, much-branched shrub. The leaves have paired obovoid, fleshy leaflets which are whitish with mealy pubescence. The small flowers are solitary and grow in the axils of the leaves; they have white, clawed petals. The fruit is a five-lobed, pear-shaped capsule containing elliptical seeds with wart-like projections. [2]

Distribution

This species is found in Spain, Crete, Northern and Northeast Africa, Mauritania, Western Asia (including southern Cyprus, the Eastern Aegean Islands and the Sinai Peninsula) and the Arabian Peninsula. [2] [1]

Ecology

Tetraena alba is a salt-tolerant plant; it does not have glands to secrete the excess salt it takes up, instead it concentrates the salt in its leaves and then sheds them, also shedding its petioles when necessary. It is found in a number of different habitats; one of these is "phytogenic hillocks", hummocky landforms typical in areas with blown sands; another is in saline depressions, sometimes as pure stands, and other times as the dominant plant in its community. Other plants in the salt-tolerant communities in which it lives include Halocnemum strobilaceum , Nitraria retusa and Limonium axillare . [3] At the Moghra Oasis in the Qattara Depression there is a brackish lake and a Phragmites swamp, and T. alba grows at the perimeter, where the desert plains start. In the innermost part of this zone it forms hummocks and grows with Tamarix nilotica , Alhagi maurorum and Nitraria retusa. In the outermost part the plants are scant, do not form mounds and are progressively smaller. [4]

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References

  1. 1 2 3 "Tetraena alba(L.f.) Beier & Thulin". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2018-01-26.CS1 maint: discouraged parameter (link)
  2. 1 2 "Zygophyllum album". EOL. Retrieved 2 February 2016.CS1 maint: discouraged parameter (link)
  3. Friedman, G.M.; Krumbein, W.E. (2012). Hypersaline Ecosystems: The Gavish Sabkha. Springer Science & Business Media. pp. 181–182. ISBN   978-3-642-70290-7.
  4. Zahran, M.A.; Willis, A.J. (2013). The Vegetation of Egypt. Springer Science & Business Media. p. 216. ISBN   978-94-015-8066-3.