Royal Botanic Gardens, Kew, is a non-departmental public body in the United Kingdom sponsored by the Department for Environment, Food and Rural Affairs. An internationally important botanical research and education institution, it employs 1,100 staff. Its board of trustees is chaired by Dame Amelia Fawcett.
An arboretum in a general sense is a botanical collection composed exclusively of trees. More commonly a modern arboretum is a botanical garden containing living collections of woody plants and is intended at least in part for scientific study.
The Arnold Arboretum of Harvard University, established in 1872, is the oldest public arboretum in North America. This botanical research institution and free public park is located in the Jamaica Plain and Roslindale neighborhoods of Boston, Massachusetts. The landscape was designed by Charles Sprague Sargent and Frederick Law Olmsted and is the second largest "link" in the Emerald Necklace. The Arnold Arboretum's collection of temperate trees, shrubs, and vines has a particular emphasis on the plants of the eastern United States and eastern Asia, where Arboretum staff and colleagues are actively sourcing new material on plant collecting expeditions. The Arboretum supports research in its landscape and in its Weld Hill Research Building.
Red Butte Garden and Arboretum consists of a botanical garden, arboretum, and amphitheatre operated by the University of Utah, in the foothills of the Wasatch Range in Salt Lake City, Utah, United States. It is open year-round to the public. Red Butte Garden contains over 100 acres (0.40 km2) of botanical gardens and several miles of hiking trails through native vegetation. Red Butte Creek runs within the northern part of the garden.
The Arboretum & Botanic Garden at the University of California, Santa Cruz, is located on the campus of the University of California, Santa Cruz, in the United States.
The Arboretum at Arizona State University is an arboretum located in small exhibit sites scattered across walkways and open areas throughout the campus of the Arizona State University in Tempe, Arizona. All of the sites are open to the public daily without charge, since the campus' public areas are not shut off from city streets.
The Guelph Arboretum of the University of Guelph is an arboretum modeled after the Arnold Arboretum of Harvard University, which was founded in 1872. The Arnold Arboretum is privately endowed as a department of Harvard just as the Guelph Arboretum is a department of the University of Guelph. The University of Guelph Arboretum was founded in the early 1970s and plantings started in 1971 which have developed into specialized gardens, botanical collections, and gene conservation programs. These Arboretums are demonstrations of American gardening which did not come into its own until the late 19th century. With Industrialization, cities grew in size with a need for natural areas, which were included through the creation of public parks. Views of botanical gardens began to change as they became sources for new material of potential horticultural use rather than only public spaces. Today these spaces act in the propagation of plants that have the potential as attractive and functional ornamentals.
The North Carolina Botanical Garden is a botanical garden operated by the University of North Carolina at Chapel Hill in Chapel Hill, North Carolina. The primary goal of the Garden is to research, catalog, and promote the native plant species of North Carolina.
The Siberian elm cultivar Ulmus pumila 'Pinnato-ramosa' was raised by Georg Dieck, as Ulmus pinnato-ramosa, at the National Arboretum, Zöschen, Germany, from seed collected for him circa 1890 in the Ili valley, Turkestan by the lawyer and amateur naturalist Vladislav E. Niedzwiecki while in exile there. Litvinov (1908) treated it as a variety of Siberian elm, U. pumilavar.arborea but this taxon was ultimately rejected by Green, who sank the tree as a cultivar: "in modern terms, it does not warrant recognition at this rank but is a variant of U. pumila maintained and known only in cultivation, and therefore best treated as a cultivar". Herbarium specimens confirm that trees in cultivation in the 20th century as U. pumilaL. var. arboreaLitv. were no different from 'Pinnato-ramosa'.
Ulmus parvifolia, commonly known as the Chinese elm or lacebark elm, is a species native to eastern Asia, including mainland China, Taiwan, Japan, North Korea, South Korea and Vietnam. It has been described as "one of the most splendid elms, having the poise of a graceful Nothofagus".
The Volčji Potok Arboretum was opened to the public in 1952. It originally formed part of the Souvan family estate in 1885, which was taken over by the University of Ljubljana in 1952 and legally declared a place of cultural and natural heritage of national importance. Now independent of the university, it is the most visited botanical garden in Slovenia and in recent years has become well known for its spring flower shows. The arboretum is primarily a botanical garden for woody plants, the only one in Slovenia.
The Zagreb Botanical Garden is a botanical garden located in downtown Zagreb, Croatia. Founded in 1889 by Antun Heinz, Professor of the University of Zagreb, and opened to public in 1891, it is part of the Faculty of Science. Covering an area of 5 hectares, the garden is situated at an altitude of 120 metres (390 ft) above sea level. It is home to over 10,000 plant species from around the world, including 1,800 exotic ones. It has large ponds for aquatic plants. Some of Slava Raškaj's most notable works were painted by the garden ponds.
The Field Elm cultivar Ulmus minor 'Suberosa', commonly known as the Cork-barked elm, is a slow-growing or dwarf form of conspicuously suberose Field Elm. Of disputed status, it is considered a distinct variety by some botanists, among them Henry (1913), Krüssmann (1984), and Bean (1988), and is sometimes cloned and planted as a cultivar. Henry said the tree "appears to be a common variety in the forests of central Europe", Bean noting that it "occurs in dry habitats". By the proposed rule that known or suspected clones of U. minor, once cultivated and named, should be treated as cultivars, the tree would be designated U. minor 'Suberosa'. The Späth nursery of Berlin distributed an U. campestris suberosa alataKirchn. [:'corky-winged'] from the 1890s to the 1930s.
