Aller Hill is a 18.4 hectare

Hectare

The hectare is a metric unit of area defined as 10,000 square metres , and primarily used in the measurement of land. In 1795, when the metric system was introduced, the are was defined as being 100 square metres and the hectare was thus 100 ares or 1/100 km2...

 (45.4 acre) biological Site of Special Scientific Interest near Aller

Aller, Somerset

Aller is a village and parish in Somerset, England, situated west of Somerton on the A372 road towards Bridgwater in the South Somerset district. The village has a population of 374...

 in Somerset

Somerset

The ceremonial and non-metropolitan county of Somerset in South West England borders Bristol and Gloucestershire to the north, Wiltshire to the east, Dorset to the south-east, and Devon to the south-west. It is partly bounded to the north and west by the Bristol Channel and the estuary of the...

, 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

Sheep's Fescue

Sheep's Fescue or Sheep Fescue is a species of grass.-General Description:It is a perennial plant sometimes found in acidic ground, for example in the Portlethen Moss, Scotland and mountain pasture, throughout Europe and eastwards across much of Asia; it has also been introduced to North...

 (Festuca ovina) in combination with Yellow Oat-grass (Trisetum flavescens) and Quaking-grass

Briza

Briza is a genus of annual grasses in the family Poaceae, native to north temperate regions. The group is generally referred to as the quaking grasses because the flower and seedheads shake on their stalks in the slightest breeze...

 (Briza media). Salad Burnet

Salad Burnet

Sanguisorba minor is a plant in the family Rosaceae that is native to western, central and southern Europe; northwest Africa and southwest Western Asia; and which has naturalized in most of North America...

 (Sanguisorba minor) forms a major component of the sward with Rough Marsh-mallow (Althaea hirsuta) and Nit-grass (Gastridium ventricosum), two
nationally rare species, also present.

Aller and Beer Woods

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....

 on the slopes of the hill are also designated as a biological Site of Special Scientific Interest.