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The outstanding characteristic of this tree is the large, spiny cones which are 20–40 cm (7.9–15.7 in) long (occasionally as much as twenty inches (51 centimeters) length has been observed), [7] 23 centimeters (nine inches) in width, [8] and weigh 2–5 kg (4.4–11.0 lb) when fresh. Each segment, or "scale", of the cone is tipped with a ...
The leaves are in fascicles of three, [6] needle-like, yellow-green, twisted, and 9–15 centimeters (3 + 1 ⁄ 2 –6 in) long. The cones are resin-sealed and irregularly shaped, [4] 8–16 cm (3 + 1 ⁄ 4 – 6 + 1 ⁄ 4 in) long and clustered in whorls of three to six on the branches. The scales end in a short stout prickle.
Sugar pine is notable for having the longest cones of any conifer, mostly 10–50 cm (4– 19 + 3 ⁄ 4 in) long, [2] [5] exceptionally to 60 cm (23 + 1 ⁄ 2 in) long [citation needed] (although the cones of the Coulter pine are more massive); their unripe weight of 1–2 kilograms (2.2–4.4 lb) makes them perilous projectiles when chewed off ...
The male cones are cylindrical, growing to 5–16 cm long; they are often clustered. The female cones are elongate-ovoid and grow to 5–19 cm long and 4–6 cm in diameter. [8] It produces reddish seed cones with a distinct acuminate tip. The leaves are 20–100 cm long, with 5-30 pairs of leaflets (pinnae). Each leaflet is linear to ...
The cones thus grow over a two-year (26-month) cycle, so that newer green and older, seed-bearing or open brown cones are on the tree at the same time. Open cone with empty pine nuts. The seed cones open to 6–9 cm (2 + 1 ⁄ 4 – 3 + 1 ⁄ 2 in) broad when mature, holding the seeds on the scales after opening.
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Conservationists are teaming up with the U.S. Forest Service and logging companies to clear scorched land and make room for new reforestation projects. How collecting pine cones helps renew Oregon ...
A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female cone on a Norway spruce (Picea abies) Immature male cones of Swiss pine (Pinus cembra) 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.