Aller Hill () is an 18.4

hectare The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), or 10,000 m2, and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is a ...

(45.4 acre)

biological Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of ...

near

Aller Aller may refer to: Places Rivers * Aller (Germany), a major river in North Germany *Aller (Asturian river), a river in Asturias, Spain *River Aller, a small river on Exmoor in Somerset, England Inhabited places in the United Kingdom *Aller, Devo ...

Somerset ( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lord_ ...

, notified in 1988. The site contains three species of plant which are nationally rare and a further three which are of restricted distribution in Somerset. The central area contains a sward dominated by

sheep's fescue ''Festuca ovina'', sheep's fescue or sheep fescue, is a species of grass. It is sometimes confused with hard fescue (''Festuca trachyphylla''). General description It is a perennial plant sometimes found in acidic ground, and in mountain pastur ...

(''Festuca ovina'') in combination with

yellow oat grass ''Trisetum flavescens'', the yellow oatgrass or golden oat grass, is a species of grass in the family Poaceae. It is native to Europe, Asia, and North Africa. It can be found elsewhere, such as sections of North America, where it was introduc ...

(''Trisetum flavescens'') and quaking-grass (''Briza media'').

Salad burnet ''Sanguisorba minor'', the salad burnet, garden burnet, small burnet, burnet (also used for ''Sanguisorba'' generally), pimpernelle, Toper's plant, and burnet-bloodwort, is an edible perennial herbaceous plant in the family Rosaceae. It has ...

(''Sanguisorba minor'') forms a major component of the sward with

rough marsh-mallow Rough may refer to: * Roughness (disambiguation) * Rough (golf), the area outside the fairway on a golf course Geography * Rough (facility), former gas field now gas storage facility, off the Yorkshire coast of England People * Alan Rough (born 1 ...

(''Althaea hirsuta'') and

nit-grass ''Gastridium ventricosum'' is a species of Poaceae, grass known by the common name nit-grass (British Isles) or nit grass (USA). This is an annual grass bearing a long, thin, smooth inflorescence of spikelets. It is native to Europe, North Africa ...

(''Gastridium ventricosum''), two nationally rare species, also present.

Aller and Beer Woods Aller and Beer Woods () is a biological Site of Special Scientific Interest. off the A372 Othery to Langport road near Aller in Somerset. It was notified in 1952. This Somerset Wildlife Trust reserve, which is about north-west of Langport an ...

on the slopes of the hill are also designated as a

References

{{Authority control Sites of Special Scientific Interest in Somerset Hills of Somerset Sites of Special Scientific Interest notified in 1988 Somerset Levels