Wavy hair-grass, Deschampsia flexuosa, has wiry leaves and delicate, shaking panicles formed of silvery or purplish-brown flower heads on wavy, hair-like stalks. The leaves are bunched in tight tufts with plants forming a very tussocky, low sward 5 to 20 cm tall before flowering, to 30 cm high.
Distribution and habitat
It is also an important component of the ground flora of birch and oak woodland. 
The plant has a preference for acidic, free-draining soil, and avoids chalk and limestone areas. It can exist over 1,200 metres (3,900 ft) above sea level.
- Woodland and scrub communities in the British National Vegetation Classification system — birch and oak woodland
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