''Tetraena qatarensis'' is a salt-tolerant

dwarf shrub A subshrub (Latin ''suffrutex'') or dwarf shrub is a short shrub, and is a woody plant. Prostrate shrub is a related term. "Subshrub" is often used interchangeably with "bush".Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Der ...

that grows in the

Arabian Peninsula The Arabian Peninsula, (; ar, شِبْهُ الْجَزِيرَةِ الْعَرَبِيَّة, , "Arabian Peninsula" or , , "Island of the Arabs") or Arabia, is a peninsula of Western Asia, situated northeast of Africa on the Arabian Plate ...

. It has small compact leaves that store water. The leaflets grow in pairs and the flowers have four or five petals.

Description

''Tetraena qatarensis'' is a dwarf shrub with multiple stems. It has tiny, fleshy leaves with paired leaflets which are deciduous, dropping off in stressful conditions. The flowers usually have five white or yellow

petal Petals are modified Leaf, leaves that surround the reproductive parts of flowers. They are often advertising coloration, brightly colored or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''c ...

s (sometimes four), ten projecting

stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filame ...

s and a minute style. The fruits are capsules, splitting into five parts when ripe.

Distribution and habitat

''Tetraena qatarensis'' is native to the Arabian Peninsula and occurs around the

Persian Gulf The Persian Gulf ( fa, خلیج فارس, translit=xalij-e fârs, lit=Gulf of Persis, Fars, ), sometimes called the ( ar, اَلْخَلِيْجُ ٱلْعَرَبِيُّ, Al-Khalīj al-ˁArabī), is a Mediterranean sea (oceanography), me ...

and the

Gulf of Oman The Gulf of Oman or Sea of Oman ( ar, خليج عمان ''khalīj ʿumān''; fa, دریای عمان ''daryâ-ye omân''), also known as Gulf of Makran or Sea of Makran ( ar, خلیج مکران ''khalīj makrān''; fa, دریای مکرا� ...

. It typically grows in coarse, stony or sandy soils at the edge of saltflats, around salt marshes, and in the sand that accumulates on the base of depressions. It also grows in non-salty locations, on calcareous soils and around the fringes of dune areas, and often dominates plant communities in these locations. On well-drained sandy soil on coastal plains, ''T. qatarensis'' may cover 75% of the ground surface, and this plant community is probably the most commonly encountered around the western side of the Persian Gulf.

Ecology

''Tetraena qatarensis'' grows in arid conditions and is both drought and salt tolerant. In the Persian Gulf area the summer is very hot, any ground moisture present evaporates and the soil becomes increasingly salty. Under these conditions, the leaves dry up and fall off the plant, and it can survive in a leafless state for several years. When significant rain falls in winter, the soil becomes less salty and the plant is stimulated into new growth. The leaf structure and physiology also change with the season, with unifoliate

xeromorphic A xerophyte (from Greek ξηρός ''xeros'' 'dry' + φυτόν ''phuton'' 'plant') is a species of plant that has adaptations to survive in an environment with little liquid water, such as a desert such as the Sahara or places in the Alps or the ...

leaves better able to withstand water loss being present during the summer. The seeds have tough coats and germination only occurs after significant rainfall. The plants are found growing in association with several species of soil

microfungi Microfungi or micromycetes are fungi—eukaryotic organisms such as molds, mildews and rusts—which have microscopic spore-producing structures. They exhibit tube tip-growth and have cell walls composed of chitin, a polymer of ''N''-acetylglucosa ...

, regularly with ''

Cladosporium sphaerospermum ''Cladosporium sphaerospermum'' is a radiotrophic fungus belonging to the genus ''Cladosporium'' and was described in 1886 by Albert Julius Otto Penzig from the decaying leaves and branches of ''Citrus''. It is a dematiaceous (darkly-pigmented) ...

'', but also sometimes with ''

Penicillium citrinum ''Penicillium citrinum'' is an anamorph, mesophilic fungus species of the genus of ''Penicillium'' which produces tanzawaic acid A-D, ACC, Mevastatin, Quinocitrinine A, Quinocitrinine B, and nephrotoxic citrinin. ''Penicillium citrinum'' ...

'' and ''

Aspergillus fumigatus ''Aspergillus fumigatus'' is a species of fungus in the genus ''Aspergillus'', and is one of the most common ''Aspergillus'' species to cause disease in individuals with an immunodeficiency. ''Aspergillus fumigatus'', a saprotroph widespread in ...

''.

References

{{Taxonbar, from=Q18076717 Zygophylloideae Flora of Qatar Flora of Western Asia