Arboretum in the context of "University of Wisconsin–Madison Arboretum"

Wilderness or wildlands (usually in the plural) are Earth's natural environments that have not been significantly modified by human activity, or any nonurbanized land not under extensive agricultural cultivation. The term has traditionally referred to terrestrial environments, though growing attention is being placed on marine wilderness. Recent maps of wilderness suggest it covers roughly one-quarter of Earth's terrestrial surface, but is being rapidly degraded by human activity. Even less wilderness remains in the ocean, with only 13.2% free from intense human activity.

Some governments establish protection for wilderness areas by law to not only preserve what already exists, but also to promote and advance a natural expression and development. These can be set up in preserves, conservation preserves, national forests, national parks and even in urban areas along rivers, gulches or otherwise undeveloped areas. Often these areas are considered important for the survival of certain species, biodiversity, ecological studies, conservation, solitude and recreation. They may also preserve historic genetic traits and provide habitat for wild flora and fauna that may be difficult to recreate in zoos, arboretums or laboratories.

In ancient Roman religion, a lucus ([ˈɫ̪uː.kʊs], plural lucī) is a sacred grove.

Lucus was one of four Latin words meaning in general "forest, woodland, grove" (along with nemus, silva, and saltus), but unlike the others it was primarily used as a religious designation, meaning "sacred grove". Servius defines the lucus as "a large number of trees with a religious significance," as distinguished from the silva, a natural forest, and a nemus, an arboretum that is not consecrated. A saltus usually implied a wilderness area with varied topographical features.

Metasequoia glyptostroboides, the dawn redwood, is a fast-growing, endangered deciduous conifer. It is the sole living species of the genus Metasequoia, one of three genera in the subfamily Sequoioideae of the family Cupressaceae. It now survives in the wild only in wet lower slopes and montane river and stream valleys in the border region of Hubei and Hunan provinces and Chongqing municipality in south-central China, notably in Lichuan county in Hubei. Although the shortest of the redwoods, it can grow to 167 ft (51 m) in height.

In 1941, the genus Metasequoia was reported by paleobotanist Shigeru Miki [jp] as a widely distributed extinct genus based on fossils, before attracting considerable attention a few years later when small populations were found alive in central China. It is a well-known example of a living fossil species. Modern dawn redwood appears identical to its late Cretaceous ancestors. The tree faces considerable risks of extinction in its wild range due to deforestation; however, it has been planted extensively in arboreta worldwide, where it has proved a popular and fast-growing ornamental plant. If the species had not been discovered when it was, it might have become extinct before being investigated.

The Koishikawa Botanical Garden (小石川植物園, Koishikawa Shokubutsuen; 40 acres, 16 hectares) is a botanical garden with an arboretum operated by the University of Tokyo Graduate School of Science. They are located at 3-7-1 Hakusan, Bunkyō, Tokyo, Japan, and open daily except Mondays; an admission fee is charged.

The United States National Arboretum is an arboretum in northeast Washington, D.C., operated by the United States Department of Agriculture's Agricultural Research Service. It was established in 1927 by an act of Congress after a campaign by USDA Chief Botanist Frederick Vernon Coville.

It is 446 acres (1.80 km) in size and is located 2.2 miles (3.5 km) northeast of the Capitol building, with entrances on New York Avenue, NE and R Street, NE. The campus's gardens, collections, and features are connected by roadways that are 9.5 miles (15.3 km) long in total. In addition to the main campus in Washington, D.C., there are research locations at the Henry A. Wallace Beltsville Agricultural Research Center in Beltsville, Maryland and in McMinville, Tennessee.

The University of Denver (DU) is a private research university in Denver, Colorado, United States. Founded in 1864, it has an enrollment of approximately 5,700 undergraduate students and 7,200 graduate students. It is classified among "R1: Doctoral Universities – Very high research spending and doctorate production". The 125-acre (0.51 km) main campus is a designated arboretum and is located five miles (8 km) south of downtown Denver.

Sir William Jackson Hooker (6 July 1785 – 12 August 1865) was an English botanist and botanical illustrator, who became the first director of Kew when in 1841 it was recommended to be placed under state ownership as a botanic garden. At Kew he founded the Herbarium and enlarged the gardens and arboretum. The standard author abbreviation Hook. is used to indicate this person as the author when citing a botanical name.

Hooker was born and educated in Norwich. An inheritance gave him the means to travel and to devote himself to the study of natural history, particularly botany. He published his account of an expedition to Iceland in 1809, even though his notes and specimens were destroyed during his voyage home. He married Maria, the eldest daughter of the Norfolk banker Dawson Turner, in 1815, afterwards living in Halesworth for 11 years, where he established a herbarium that became renowned by botanists at the time.

McDade Park is a community park located in Scranton in Lackawanna County, in northeastern Pennsylvania. It is named after former U.S. Representative Joseph M. McDade. The park is located on 200 acres (0.81 km) of land, containing an outdoor pool, a fishing pond as well as a more isolated pond, basketball courts, hiking trails, tennis courts and two picnic pavilions. The park also contains an arboretum and numerous natural gardens. In addition, the park has a children's playground area, a creek, two baseball fields and numerous hills which are ideal for sledding during northeastern Pennsylvania's winter season. The park has free admission for all activities.