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Giant sequoia. Silvics of North America (1991), [1] a forest inventory compiled and published by the United States Forest Service, includes many conifers. [a] It superseded Silvics of Forest Trees of the United States (1965), which was the first extensive American tree inventory. [3]
Encyclopedia of Conifers. A Comprehensive Guide to Conifer Cultivars and Species is an encyclopedia written by Aris G. Auders and Derek P. Spicer, published in 2012. The two-volume, illustrated encyclopedia is a complete reference book covering all recognised conifer cultivars and species, both hardy and tropical.
The American Conifer Society has established a select group of public gardens, designated as "reference gardens". To be considered for this program, a garden must follow the following standards: Contain conifer collections that will educate the public about growing conifers and demonstrate their uses in the landscape
Tsuga mertensiana is a large evergreen conifer growing up to 20 to 40 meters (66 to 131 feet) tall, with exceptional specimens as tall as 59 m (194 ft) tall. They have a trunk diameter of up to 2 m (6 + 1 ⁄ 2 ft). The bark is about 3 centimeters (1 + 1 ⁄ 4 inches) thick and square-cracked or furrowed, and purplish-brown [3] to gray in color ...
"Icicle Tree" showing burling of the trunk. Sequoia is a genus of redwood coniferous trees in the subfamily Sequoioideae of the family Cupressaceae.The only extant species of the genus is Sequoia sempervirens in the Northern California coastal forests ecoregion of Northern California and Southwestern Oregon in the United States.
The order Pinales in the division Pinophyta, class Pinopsida, comprises all the extant conifers. The distinguishing characteristic is the reproductive structure known as a cone produced by all Pinales. All of the extant conifers, such as Araucaria, cedar, celery-pine, cypress, fir, juniper, kauri, larch, pine, redwood, spruce, and yew, are ...
The different types of coniferous swamps are named according to their dominant trees. In North America, a 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.