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  • COMMON NAME: Swamp she-oak, Swamp oak, Grey oak, River oak.
  • ARABIC: البلوط الرمادي
  • BOTANICAL NAME: Casuarina glauca Spreng.
  • SYNONYMS: Casuarina torulosa Miq.
  • FAMILY: CASUARINACEAE
  • KIND: Introduced
  • EMIRATE: Fujairah
  • CATEGORIES: Landscape (L)
  • GROWTH FORMS: Tree
  • HABITATS: Terrace Terrace (Silt)
  • TYPES: Perennial
  • REMARKS: A significant inconvenience in urban settings is that its roots can invade underground water and sewer pipes if these are within 15 m (50 ft) of the tree. It can also acidify acid sulphate soils as it lowers the water table.
V.V. Byalt, V.M. Korshunov, M.V. Korshunov. Cadaster of the Flora of Fujairah Emirate (United Arab Emirates). Al Fujairah 2021. http://www.worldfloraonline.org/taxon/wfo-0000590675 https://en.wikipedia.org/wiki/Casuarina_glauca
It tolerates waterlogged soils and even soils with some salinity. Ornamental plants.
Trees dioecious, to 20 m tall. Trunk to 35 cm d.b.h.; bark grayish brown or grayish black, finely fissured and scaly, pale yellow adaxially. Ultimate branchlets ascending to pendulous, grayish green or glaucous green, rather long, to 1 m, 0.9-1.4 mm in diam.; articles 1-1.8 cm, slightly swollen at apex. Leaves erect but those of new shoots strongly recurved, 12-17 per whorl, narrowly lanceolate. Male inflorescences 1-3 cm. Cones broadly ellipsoid to subglobose, 1.2-2 cm, truncate at both ends; apex of bracteoles broadly acute to obtuse. Samaras 4-6 mm including wing.
Cultivated in UAE as ornamental plant.
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