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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.
Larches are deciduous conifers in the genus Larix, of the family Pinaceae (subfamily Laricoideae).Growing from 20 to 45 metres (65 to 150 feet) tall, [1] they are native to the cooler regions of the northern hemisphere, where they are found in lowland forests in the high latitudes, and high in mountains further south.
The Southeastern conifer forests are a temperate coniferous forest ecoregion of the southeastern United States. It is the largest conifer forest ecoregion east of the Mississippi River . [ 2 ] It is also the southernmost instance of temperate coniferous forest within the Nearctic realm .
Major stands of southern Appalachian spruce–fir forest. The southern Appalachian spruce–fir forest consists of several stands covering a combined area of between 60,000 and 70,000 acres (24,000 and 28,000 ha), [2] [6] although less conservative estimates have placed the forest's coverage at around 90,000 acres (36,000 ha). [7]
The Piney Woods is a temperate coniferous forest terrestrial ecoregion in the Southern United States covering 54,400 square miles (141,000 km 2) of East Texas, southern Arkansas, western Louisiana, and southeastern Oklahoma.
Similarly, the Southeastern conifer forests occupy the Gulf coastal plain to the south. Higher, and to the north and west, are the Appalachian-Blue Ridge forests and the Appalachian mixed mesophytic forests of the Appalachian Mountains. [2] Small stands of these forests extend into north Florida.
Taxodium distichum (baldcypress, [3] [4] [5] bald-cypress, [6] bald cypress, swamp cypress; French: cyprès chauve; cipre in Louisiana) is a deciduous conifer in the family Cupressaceae. It is native to the southeastern United States. Hardy and tough, this tree adapts to a wide range of soil types, whether wet, salty, dry, or swampy.
The main plant communities are conifer forests, broadleaf deciduous forests, and alpine meadows and shrublands. Conifer forests are the most widespread. Turkish black pine ( Pinus nigra ), Lebanon cedar ( Cedrus libani ), Taurus fir ( Abies cilicica ), and juniper ( Juniperus foetidissima and Juniperus excelsa ) are the most common conifers.