The Arboretum Marcel Kroenlein (12 hectares), also known as the Arboretum de Roure, is a high-altitude arboretum

Arboretum

An arboretum in a narrow sense is a collection of trees only. Related collections include a fruticetum , and a viticetum, a collection of vines. More commonly, today, an arboretum is a botanical garden containing living collections of woody plants intended at least partly for scientific study...

 located at 1,280 to 1,700 meters above sea level on the edge of the Mercantour National Park

Mercantour National Park

Mercantour National Park is one of the nine national parks of France. Since it was created in 1979, the Mercantour Park has proven popular, with 800,000 visitors every year enjoying the 600 km of marked footpaths and visiting its villages.-Extent:...

 in Roure

Roure

Roure is a commune in the Alpes-Maritimes department in southeastern France.-Population:-References:*...

, Alpes-Maritimes

Alpes-Maritimes

Alpes-Maritimes is a department in the extreme southeast corner of France.- History : was created by Octavian as a Roman military district in 14 BC, and became a full Roman province in the middle of the 1st century with its capital first at Cemenelum and subsequently at Embrun...

, Provence-Alpes-Côte d'Azur

Provence-Alpes-Côte d'Azur

Provence-Alpes-Côte d'Azur or PACA is one of the 27 regions of France.It is made up of:* the former French province of Provence* the former papal territory of Avignon, known as Comtat Venaissin...

, France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

. It is open daily without charge.

The arboretum was conceived in 1987 when Michèle Ramin, now the arboretum's president, met Marcel Kroenlein, then director of the Jardin Exotique de Monaco

Jardin Exotique de Monaco

The Jardin Exotique de Monaco is a botanical garden located on a cliffside in Monaco.-History and features:...

. Its first trees were planted in 1988, and in 1989 artists first began to display their artwork on the site. Featured artists have included Andy Goldsworthy

Andy Goldsworthy

Andy Goldsworthy, OBE is a British sculptor, photographer and environmentalist producing site-specific sculpture and land art situated in natural and urban settings. He lives and works in Scotland.-Life and career:The son of F...

 and Arman

Arman

Arman was a French-born American artist. Born Armand Pierre Fernandez in Nice, France, Arman is a painter who moved from using the objects as paintbrushes to using them as the painting itself...

.

The arboretum's mission is to collect hardwoods and conifers from the Alps

Alps

The Alps is one of the great mountain range systems of Europe, stretching from Austria and Slovenia in the east through Italy, Switzerland, Liechtenstein and Germany to France in the west....

 and other mountains across the world, and to preserve the natural flora of the Alpes-Maritimes

Alpes-Maritimes

Alpes-Maritimes is a department in the extreme southeast corner of France.- History : was created by Octavian as a Roman military district in 14 BC, and became a full Roman province in the middle of the 1st century with its capital first at Cemenelum and subsequently at Embrun...

. The site features a variety of micro-climates, due to its Alpine and Mediterranean

Mediterranean climate

A Mediterranean climate is the climate typical of most of the lands in the Mediterranean Basin, and is a particular variety of subtropical climate...

 location and its varied topography, and is host to a wide variety of natural vegetation. Indigenous foliage is primarily pine

Pine

Pines are trees in the genus Pinus ,in the family Pinaceae. They make up the monotypic subfamily Pinoideae. There are about 115 species of pine, although different authorities accept between 105 and 125 species.-Etymology:...

 and European larch

European Larch

Larix decidua, common name European larch, is a species of larch native to the mountains of central Europe, in the Alps and Carpathians, with disjunct lowland populations in northern Poland and southern Lithuania.-Description:...

. More than 300 additional species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 have been introduced to date.

The arboretum now contains a good collection of conifers, including Wollemi pine

Wollemi Pine

Wollemia is a genus of coniferous tree in the family Araucariaceae. Wollemia was only known through fossil records until the Australian species Wollemia nobilis was discovered in 1994 in a temperate rainforest wilderness area of the Wollemi National Park in New South Wales, in a remote series of...

 and Pinus culminicola, as well as varieties of cedar

Cedar wood

Cedar wood comes from several different trees that grow in different parts of the world, and may have different uses.* California incense-cedar, from Calocedrus decurrens, is the primary type of wood used for making pencils...

, fir

Fir

Firs are a genus of 48–55 species of evergreen conifers in the family Pinaceae. They are found through much of North and Central America, Europe, Asia, and North Africa, occurring in mountains over most of the range...

, juniper

Juniper

Junipers are coniferous plants in the genus Juniperus of the cypress family Cupressaceae. Depending on taxonomic viewpoint, there are between 50-67 species of juniper, widely distributed throughout the northern hemisphere, from the Arctic, south to tropical Africa in the Old World, and to the...

, larch

Larch

Larches are conifers in the genus Larix, in the family Pinaceae. Growing from 15 to 50m tall, they are native to much of the cooler temperate northern hemisphere, on lowlands in the north and high on mountains further south...

, spruce

Spruce

A spruce is a tree of the genus Picea , a genus of about 35 species of coniferous evergreen trees in the Family Pinaceae, found in the northern temperate and boreal regions of the earth. Spruces are large trees, from tall when mature, and can be distinguished by their whorled branches and conical...

, etc. It also contains a collection of high-altitude maple

Maple

Acer is a genus of trees or shrubs commonly known as maple.Maples are variously classified in a family of their own, the Aceraceae, or together with the Hippocastanaceae included in the family Sapindaceae. Modern classifications, including the Angiosperm Phylogeny Group system, favour inclusion in...

s from the Americas, Asia, and Europe, and ash tree

Ash tree

Fraxinus is a genus flowering plants in the olive and lilac family, Oleaceae. It contains 45-65 species of usually medium to large trees, mostly deciduous though a few subtropical species are evergreen. The tree's common English name, ash, goes back to the Old English æsc, while the generic name...

s, gingko, red oak, prunus

Prunus

Prunus is a genus of trees and shrubs, which includes the plums, cherries, peaches, apricots and almonds. There are around 430 species spread throughout the northern temperate regions of the globe. Many members of the genus are widely cultivated for fruit and ornament.-Botany:Members of the genus...

, walnut

Walnut

Juglans is a plant genus of the family Juglandaceae, the seeds of which are known as walnuts. They are deciduous trees, 10–40 meters tall , with pinnate leaves 200–900 millimetres long , with 5–25 leaflets; the shoots have chambered pith, a character shared with the wingnuts , but not the hickories...

, and so forth, and a collection of rare and endangered wild rose

Wild Rose

Wild Rose is the name given to certain flowering shrubs:*Genus Rosa:** Rosa acicularis, or Wild Rose, a rose species which occurs in Asia, Europe, and North America...

s.