Isle Ristol, the innermost of the Summer Isles

Summer Isles

The Summer Isles are an archipelago lying in the mouth of Loch Broom, in the Highland region of Scotland.-Geography:The only inhabited isle, Tanera Mòr, is also the largest. It is home to an Atlantic salmon fish farm, some rental holiday homes, a café and a post office, which has operated its own...

 in Scotland, is a Scottish Wildlife Trust

Scottish Wildlife Trust

The Scottish Wildlife Trust is a registered charity dedicated to conserving the wildlife and natural environment of Scotland.-Description:The Scottish Wildlife Trust has over 32,800 members...

 Reserve.

Lying roughly 12 miles (19.3 km) north of Ullapool

Ullapool

Ullapool is a small town of around 1,300 inhabitants in Ross and Cromarty, Highland, Scotland. Despite its small size, it is the largest settlement for many miles around, and is a major tourist destination of Scotland. The North Atlantic Drift passes by Ullapool, bringing moderate temperatures...

 in Wester Ross

Wester Ross

is a western area of Ross and Cromarty in Scotland, notably containing the villages on the west coast such as:* Lochcarron* Applecross* Shieldaig* Torridon* Kinlochewe * * * Aultbea* Laide* Ullapool* Achiltibuie...

, it is a tidal island, in Loch an Alltain Duibh, that is separated by a narrow channel from Old Dorney Bay. Access is by boat from Old Dornie.

Over fifty higher species have been identified amongst the flora on the Isle Ristol machair, amongst which are moonwort

Moonwort

Moonworts are ferns, seedless vascular plants, of the genus Botrychium, sensu stricto. They are small, with fleshy roots, and reproduce by spores shed into the air. One part of the leaf, the trophophore, is sterile and fernlike; the other, the sporophore, is fertile and carries the clusters of...

 and adder's tongue

Ophioglossum

Ophioglossum is a genus of about 25-30 species of Ophioglossales in the family Ophioglossaceae, with a cosmopolitan but primarily tropical and subtropical distribution. The name Ophioglossum comes from the Greek, and means "snake-tongue".Adders-tongues are so-called because the spore-bearing stalk...

.

Isle Ristol was a site of a British Fishery Society station in the late 18th century.