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The great majority of conifer genera and species are evergreen, retaining their leaves for several (2–40) years before falling, but unusual deciduous conifers occur in five genera (Larix, Pseudolarix, Glyptostrobus, Metasequoia and Taxodium), shedding their leaves in autumn and leafless through the winter.
Sugar maple-paper birch forest in Hiawatha National Forest, Michigan. This ecoregion is a transition area between the taiga (Boreal forest) to the north and the temperate deciduous forest and tallgrass prairie to the south and west and thus contains a variety of habitats including northern coniferous forests, northern hardwood forest, boreal hardwood-conifer forest, swamp forest, and peatland ...
Rich conifer swamp is dominated by northern white cedar and typically occurs south of the climatic tension zone throughout the Midwest and northeastern United States and adjacent areas in Canada. North of the climatic tension zone, tamarack (Larix laricina) is the dominant species of conifer in minerotrophic wetlands classified as rich tamarack ...
Coast Douglas-fir is the second-tallest conifer in the world (after coast redwood), and the third-tallest of all trees, (after Eucalyptus regnans).Currently, coast Douglas-fir trees 60–75 metres (197–246 ft) or more in height and 1.5–2 metres (4.9–6.6 ft) in diameter are common in old growth stands, [4] and maximum heights of 100–120 metres (330–390 ft) and diameters up to 4.5–5. ...
The largest known specimen is 34 m (112 ft) tall and 175 cm (69 in) diameter, on South Manitou Island within Leelanau County, Michigan. [citation needed] Northern white cedars can be very long-lived trees in certain conditions, with notably old specimens growing on cliffs where they are inaccessible to deer and wildfire.
Taxodium ascendens, also known as pond cypress, [2] is a deciduous conifer of the genus Taxodium, native to North America.Many botanists treat it as a variety of bald cypress, Taxodium distichum (as T. distichum var. imbricatum) rather than as a distinct species, but it differs in habitat, occurring mainly in still blackwater rivers, ponds and swamps without silt-rich flood deposits.
Although the area was logged until the early twentieth century, conifers and northern hardwoods have now been developed. Moose have been reintroduced into the area. [1] The McCormick family of Chicago were the original owners, having acquired the tract in small pieces between 1904 and 1920. It was willed to the federal government in 1967. [2]
The conifers, division Pinophyta, are one of 13 or 14 division level taxa within the Kingdom Plantae. They are cone -bearing seed plants with vascular tissue; all extant conifers are woody plants , the great majority being trees with just a few being shrubs .