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The saltbush has a number of adaptations which enable it to survive in the desert.
It has an extensive and deep root system which covers a considerable area, enabling it to extract as much moisture and nutrients as possible from the soil. This means it can withstand long periods of drought. In addition to the large root system, it has a secondary root system cinsisting of fine hair-like roots which are located justbeneath the surface of the soil. These fine roots collect moisture from the morning dew.
Saltbush has grey leaves. Grey leaves absorb less heat than green leaves, meaning less moisture is lost through condensation. Another measure to conserve water and keep the plant cooler is the presence of numerous salt crystals, which actually reflect heat away from the leaves.
Saltbush is a halophyte - one of very few plants in the world which can actually use and process salt from the soil in which they grow. Because they have a higher concentration of soil in their roots at a cellular level, this draws more moisture via osmosis from the soil to the plant.
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What does the old man saltbush look like?
Old man saltbush is a silvery-grey shrub with small, narrow leaves covered in fine white hairs to help reduce water loss in arid conditions. It can grow up to three meters tall and produces small, inconspicuous flowers followed by small, winged seeds.
What is a succulent plant of the south Australian deserts?
Old Man Saltbush - Atriplex nummulariaBluebush- Maireana speciesInland pigface- Carprobrobrotus modestus
Who named the old man salt bush and why?
The old man saltbush (Atriplex nummularia) was named by botanist Robert Brown in the early 19th century. It gets its common name from its silvery-grey leaves and its ability to grow in salty environments. The name "old man" likely refers to its longevity and resilience in harsh conditions.
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