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A conifer cone, or in formal botanical usage a strobilus, pl.: strobili, is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads. They are usually woody and variously conic, cylindrical, ovoid, to globular, and have scales and bracts arranged around a central axis, but can be fleshy and berry-like.
Cupressaceae or the cypress family is a family of conifers. The family includes 27–30 genera (17 monotypic ), which include the junipers and redwoods , with about 130–140 species in total. They are monoecious , subdioecious or (rarely) dioecious trees and shrubs up to 116 m (381 ft) tall.
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 [a] It superseded Silvics of Forest Trees of the United States (1965), which was the first extensive American tree inventory.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]
Subfamily Pinoideae : cones are biennial, rarely triennial, with each year's scale-growth distinct, forming an umbo on each scale, the cone scale base is broad, concealing the seeds fully from abaxial (below the phloem vessels) view, the seed is without resin vesicles, the seed wing holds the seed in a pair of claws, leaves have primary ...
Most conifers are monoecious, but some are subdioecious or dioecious; all are wind-pollinated. Conifer seeds develop inside a protective cone called a strobilus. The cones take from four months to three years to reach maturity, and vary in size from 2 to 600 millimetres (1 ⁄ 8 to 23 + 5 ⁄ 8 in) long.
The cones are 8–17 cm (3– 6 + 1 ⁄ 2 in) long and 4–6 cm (1 + 1 ⁄ 2 – 2 + 1 ⁄ 4 in) broad, dark purple before maturity; [4] [5] the scale bracts are short, and hidden in the closed cone. The brownish winged seeds are 3.5 mm (1 ⁄ 8 in) long [4] and released when the cones disintegrate at maturity about 6–7 months after pollination.
Gov. Gavin Newsom’s Forestry and Fire Task Force found that 1.5 million acres of California forest were scorched by 70% high-severity fire during the 2019-2021 fire seasons, according to an ...
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