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Astrebla is a small genus of xerophytic (adapted to survive in an environment with little liquid water) grasses found only in Australia. They are the dominant grass across much of the continent. Atlas of Living Australia, Astrebla F.Muell. ex Benth., Mitchell Grass They are common name known as Mitchell grass after Scottish explorer Thomas Mitchell (1792-1855), who first collected a specimen near Bourke in New South Wales.
Mitchell grasses grow on clay soils, mainly between an upper limit of and a lower limit of average annual rainfall, and at even lower rainfall in depressions where the water concentrates following rains, for example in Sturt's Stony Desert. Mitchell grasses are deep-rooted and become dormant during drought, allowing them to survive extended periods without rainfall. FutureBeef Program for Northern Australia
They are commonly found clumped together and reaching one metre high, providing habitat for organisms such as mammals. (2025). 9780643098145, CSIRO Publishing. ISBN 9780643098145
| + !Scientific name !Common name !Characteristics | ||
| Astrebla elymoides | hoop Mitchell grass | the second most common species |
| Astrebla lappacea | curly Mitchell grass | the most common species |
| Astrebla pectinata | barley Mitchell grass | the most drought-tolerant species |
| Astrebla squarrosa | bull Mitchell grass | the most flood-tolerant species |
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